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Volume 25, Issue 10
Displaying 1-16 of 16 articles from this issue
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Tadashi KIKUCHI, Tetsuya MURAOKA, Keiichi FURUYA, Satoshi HAYAKAWA1976 Volume 25 Issue 10 Pages 655-659
Published: October 10, 1976
Released on J-STAGE: June 30, 2009
JOURNAL FREE ACCESSA Kjeldahl method using SnCl2-polyphosphoric acid was developed. Two grams of high carbon ferrochromium sample could be digested at one operation, and the subsequent residue treatments could be eliminated as compared with a modified JIS method [this journal, 22, 1121 (1973)]. Phosphoric acid was prepared at 220°C with aspirating water vapor and trapping free ammonia in air with cone. H2SO4. After cooling, 15%w/w of SnCl2 was added to the product and the solution was heated gently up to 220°C. Two grams of sample (under 150 mesh) was treated in 30 ml of SnCl2-poly-phosphoric acid at 100°C for the initial 15 min, and if no bubbling out was seen, then the decomposition was completed at 350°C with refluxing water until thr residue could not be observed. The procedures for water distillation and titration were based on JIS method. The nitrogen value obtained was 0.031%, which was in good agreement with those by the modified JIS method. The time required for one analysis was about 170 min, which was less than a half for the modified JIS method. The influence of sample particle size was not observed if those under 150 mesh were used, and the preparation temperature for polyphosphoric acid was allowed in the range of (180240)°C.View full abstractDownload PDF (847K) -
Toshihiro KATO, Yoshihiro ASABE, Masao SUZUKI, Shoji TAKITANI1976 Volume 25 Issue 10 Pages 659-662
Published: October 10, 1976
Released on J-STAGE: February 16, 2010
JOURNAL FREE ACCESSThe fluorescence reaction of fusarenon-X with zirconyl nitrate-ethylenediamine reagent was studied in order to establish a simple and rapid micro-determining method for fusarenon-X and its related trichothecene mycotoxins. The following procedure was chosen as a standard method as the result of discussing various conditions such as the water contamination in solvent, the concentration of zirconyl nitrate and ethylenediamine, the reaction temperature and time: To a 0.4 ml of fusarenon-X standard solution in a test tube with ground stopper, 5 μl of 3.5%(v/v)-ethylenediamine methanol solution and 10 μl of 5.0% (w/v) zirconyl nitrate methanol solution arc added and the mixture is heated at 40°C for 35 minutes. After standing for 10 minutes at room temperature, the fluorescence intensity of the mixture is measured (λex: 348 nm, λem: 458 nm). The fluorescence product was stable for two hours at room temperature. The calibration curve showed a straight line for (10250) ng/0.4 ml of fusarenon-X. For other trichothecene mycotoxins, nivalenol and dehydroxynivalenol could be also determined for (10230)ng/0.4 ml, (10200)ng/0.4 ml respectively by this method, but T-2toxin, HT-2toxin, neosolaniol and trichothecin gave no fluorescence.View full abstractDownload PDF (606K) -
Akira SATO, Norimitsu SAITOH1976 Volume 25 Issue 10 Pages 663-667
Published: October 10, 1976
Released on J-STAGE: February 16, 2010
JOURNAL FREE ACCESSTo remove the interference of diverse ions in sea water the coprecipitation with zirconium hydroxide was investigated. Ten mg of zirconium was added to 1000 ml of acidified sea water, then pH of the solution was adjusted to 9.0 with ammonia water. Arsenic, chromium and lead were coprecipitated with zirconium hydroxide and the precipitate was filtered through Toyo No. 5A filter paper. Then the residue was dissolved in boiling 2N hydrochloric acid, and the solution was made into 50 ml. An aliquot (50 μl) was injected into the cavity of the carbon tube atomizer. The solution was dried and ashed. Then it was atomized by running a high electric current into the atomizer.
Nitrogen gas was employed instead of argon gas as an inert sheath at a flow rate of 3.0 l/min. The concentration was calculated directly from the calibration curves by measuring the absorbance at 193.7 nm for arsenic, at 357.9 nm for chromium and at 283.3 nm for lead, respectively.
Three samples were analyzed. In the sea water of Ofunato Bay, Jodogahama Beach and Omoe Beach 3.19, 1.87, 7.67 ppb of arsenic and 0.20, 0.27, 0.21 ppb of chromium were found. Lead was not detected in the sample of Ofunato Bay and 0.36 and 0.51 ppb were found in Jodogahama and Omoe samples.
This method was suited for the preliminary treatment in the flameless atomic absorption spectroscopy, as diverse ions such as Na+, K+, Ca2+ and Mg2+ did not influence the determination. Moreover the method was simple, rapid and correct.
When the standard solution was determined by flameless atomic absorption spectroscopy using a carbon tube atomizer, the coefficient of variation was found to be 1.69% for arsenic, 2.51% for chromium and 2.34% for lead.View full abstractDownload PDF (791K) -
Hiroto WATANABE, Jun'ichiro MIURA1976 Volume 25 Issue 10 Pages 667-670
Published: October 10, 1976
Released on J-STAGE: February 16, 2010
JOURNAL FREE ACCESSA method for the selection of masking agents was developed by assuming that 1-(2-thiazolylazo)-2-naphthol (TAN) and its chelates are distributed between the micellar phase of triton X-100 and aqueous phase. When two metal ions, M1j+ and M2j+, are to be separated, the possibility of achieving a separation is expressed by the ratio of two distribution ratios in Eq. (1),
Q1/Q2=(βj1/βj2) (αM2/αM1) …… (1)
where βj is the stability constant of M(TAN)j and αM is the side reaction coefficient of M. The distribution coefficients of M(TAN)j were assumed to be constant. The masking of M2 may be regarded as complete if Q1/Q2>104. From the calculation of Eq. (1) the combination of N-(dithiocarboxy)-glycine and pyrophosphate (or citrate) was adequate for masking zinc, cadmium and cobalt at pH 7.1. These masking agents were also confirmed experimentally to be satisfactory. The method would provide a quick survey of masking agents required in the spectrophotometry with nonionic surfactant.View full abstractDownload PDF (696K) -
Yoshinobu WAKAMATSU1976 Volume 25 Issue 10 Pages 671-674
Published: October 10, 1976
Released on J-STAGE: February 16, 2010
JOURNAL FREE ACCESSSodium 2-bromo-4, 5-dihydroxyazobenzene-4'-solfonate (abbreviated as BDAS) reacts with traces of copper(II) in a neutral medium in the presence of cetyltrimethylammonium chloride (CTMAC) to form a strongly colored ternary complex. The complex has an absorption maximum at 530 nm, and the maximum absorbance was obtained in the pH range from 6.4 to 8.3. The absorbance of the complex was constant provided that the BDAS and CTMAC concentrations were more than 1.0×10-4 M and 4.0×10-4 M respectively. Absorbance of the reagent blank was effectively reduced by addition of excessive sodium borate.
The procedure is as follows: Transfer the sample solution containing up to 26 μg of copper(II) to a 25 ml volumetric flask. Add 4 ml of 1×10-3 M BDAS, 10 ml of 0.2 M phosphate buffer (pH 7.0) containing 0.04 M sodium borate, 3 ml of 0.01 M CTMAC and 2.5 ml of 1 M potassium chloride. Dilute to the mark with water and measure the absorbance at 530 nm using the reagent blank as a reference.
Beer's law was obeyed over the range 026μg of copper(II). The apparent molar absorptivity of the ternary complex is 4.8×104 cm-1 mol-1 l at 530 nm, and Sandell's sensitivity is 1.4×10-3 μg cm-2. The combining ratio of copper(II) and BDAS in the ternary complex was shown to be 1:2. Iron(III), aluminum, galium, indium, titanium(IV) and molybdenum(VI) interfered with the determination of copper (II) even when present at microgram levels.View full abstractDownload PDF (639K) -
Tadao SAKAI, Masahiro TSUBOUCHI, Yoshihisa AZECHI1976 Volume 25 Issue 10 Pages 675-679
Published: October 10, 1976
Released on J-STAGE: February 16, 2010
JOURNAL FREE ACCESSQuaternary ammonium salts, amines and alkaloids have sensitively determined with tetrabromophenolphthalein ethyl ester. These, however, gave strong interferences each other. Therefore, a spectrophotometric method is proposed for the determination of trace amounts of benzethonium with 2, 6-dichloroindophenol (DCIP) by solvent extraction. Benzethonium which is a cationic surfactant is selectively extracted into nitrobenzene with DCIP. Accordingly, this method can be applied to the determination of benzethonium in the presence of a small amount of amines and alkaloids. The inorganic substances, such as sodium chloride, calcium chloride, potassium bromide of 3000 fold molar excess over benzethonium had no influence on the absorbance of the extract. Further, amines or alkaloids, such as hydroxylamine, papaverine, nicotinamide and ephedrine of (60200) fold molar excess had no influence, too. However, a small amount of atropine and thiamine interfered slightly. The calibration curve is prepared as follows; (15) ml of a standard benzethonium solution (5×10-5 M), 5 ml of 0.1 M borate-0.3 M phosphate buffer (pH 8.5), and 3 ml of DCIP (5×10-4 M) are taken in a separating funnel, then the resultant solution is diluted to 50 ml with water and shaken with 10 ml of nitrobenzene for 3 min. The extract is centrifuged to remove droplets of water, and its absorbance is measured at 650 nm against a reagent blank. The color species is assumed to be [DCIP]-·[Benzethonium]+.View full abstractDownload PDF (783K) -
Yoshio SHIJO1976 Volume 25 Issue 10 Pages 680-684
Published: October 10, 1976
Released on J-STAGE: February 16, 2010
JOURNAL FREE ACCESSA spectrophotometric method of determination of the rare earth was studied by the solvent extraction of rare earth-Xylenol Orange chelate into xylene solution of trioctylethylammonium bromide(TOEA). The rare earth-XO-TOEA complexes are extracted into aromatic hydrocarbons such as benzene, toluene, and xylene, but not into polar solvents such as n-butanol ethylacetate, methylisobutylketone, and nitrobenzene. The optimum pH range for the extraction were 6.36.7, 6.36.5, 5.86.9, 5.76.9, and 5.56.8 for lanthanum, praseodymium, cerium, gadolinium, and dysprosium, respectively. The absorption maximum of the complexes extracted into xylene were found at 605 nm for lanthanum, praseodymium, and cerium, 596 nm for gadolinium, and 590 nm for dysprosium. Beer's law held for about 04.5μg of rare earth per 5 ml of xylene. The molar absorptivity of the extracted species were 1.53 × 105, 1.42×105, 1.35×105, 8.5×104, 8.2×104 cm-1 mol-1 l for lanthanum, praseodymium, cerium, gadolinium, and dysprosium, respectively. The composition of the ternary complexes were estimated to be M: XO: TOEA=1:1:2 for gadolinium and dysprosium, whereas 1:2: n for lanthanum, praseodymium and cerium. Combination ratio n of TOEA to metal-XO chelates in the latters could not be estimated by the commonly available methods. Thorium, vanadium, uranium, bismuth, aluminum, zirconium, chromium, nitrate, perchlorate and iodide interfered when triethylenetetramine and 1, 10-phenanthroline were added as masking agent.View full abstractDownload PDF (824K) -
Kenichi UEDA, Shohei TAMURA1976 Volume 25 Issue 10 Pages 684-688
Published: October 10, 1976
Released on J-STAGE: June 30, 2009
JOURNAL FREE ACCESSAtomizing process of lead in heated metal atomizer (HMA) with a pulse heating control system was studied. The high current operation of pulse heating system made it possible to heat the tantalum filament of HMA with the rate of temperature increase 20000°C/s. The time response of amplifier used was 5 ms, in order to observe the details of rapid phenomena and peak-holded signals were recorded on a pen recorder. The sensitivity of HMA was independent on the final temperature and proportional to heating rate to the 0.85th power. The atomizing temperature shifted with a function of the heating rate. It was raised by about 50°C when the heating rate was increased by 100°C/s to 1000°C/s. Chemical reactions during the heating process were discussed in order to explain the changes of the pulse shapes and the atomizing temperatures owing to the drying time, the ashing temperature and the heating rate. The interference of inorganic acids were suppressed under the condition of low drying temperature and rapid heating. The measured velocity of free atoms was 10 cm/s within 5 mm from the filament. Spectro-photographic measurement of spatial distribution of free atoms showed that the diffusion of atoms rearranged the irregular distribution of a sample on the filament.View full abstractDownload PDF (869K) -
Kazumasa HIRAUCHI, Sachiko MASUDA1976 Volume 25 Issue 10 Pages 689-692
Published: October 10, 1976
Released on J-STAGE: February 16, 2010
JOURNAL FREE ACCESSAn in situ fluorometric method has been developed for the quantitation of siomycin A (A), siomycin B (B), and siomycin D1 (D1). The method is based on thinlayer chromatographic separation by silicagel G plate followed by treatment fluorescence reaction with sulfuric acid.
The procedure for the fluorometric determination of A is as follow: Spot 10 μl of sample solution containing less than 3μg of A on a silicagel G plate. Develop the spotted plate with a mixture of chloroform, ether, and methanol (6:3:1) for 45 minutes in the developing chamber without the cover by one-dimensional ascending method and then with a mixture of chloroform and methanol (95:5) for 20 minutes in the developing chamber saturated with the solvent vapor by two-dimensional ascending method. Heat the plate for 20 minutes at (150±2)°C on a hot plate after spraying 15 N sulfuric acid. Within 80 minutes, detect the position of the fluorescence spot formed from A with 365 nm ultraviolet lamp and measure the fluorescence intensity of the spot at 452 nm at the excitation wavelength 398 nm by scanning along one-dimensional developing direction. The linearity of the calibration graphs between 0.2 and 3μg per spot is satisfactory.
The procedure for the fluorometric determination of B is as follow: Spot 10 μl of sample solution containing less than 0.4 μg of B on a silicagel G plate. Develop the spotted plate with a mixture of chloroform and methanol (95:5) for 20 minutes in the developing chamber saturated with the solvent vapor by one-dimensional ascending method. Then, carry out the spray, the heating, and the measurement in a similar manner as A. The linearity of the calibration graphs between 0.06 and 0.4μg per spot is satisfactory.
The procedure for the fluorometric determination of D1 is as follows: Spot 10μl of sample solution containing less than 0.6μg of D1 on a silicagel G plate. Develop the spotted plate with a mixture of chloroform, ether and methanol (6:3:1) for 45 minutes by one-dimensional ascending method and then for 20 minutes by two-dimensional ascending method in the developing chamber without the cover. Subsequently, carry out the spray, the heating, and the measurement in a similar manner as A. The linearity of the calibration graphs between 0.03 and 0.6 μg per spot is satisfactory.View full abstractDownload PDF (613K) -
Kousaburo OHASHI, Toshinori SUZUKI, Kaoru KUBO, Katsumi YAMAMOTO1976 Volume 25 Issue 10 Pages 693-697
Published: October 10, 1976
Released on J-STAGE: February 16, 2010
JOURNAL FREE ACCESSThe sodium nitrite- or sodium sulfite-catalyzed complex formations between chromium(III) ion and ethylenediamine-N, N, N', N'-tetraacetate (EDTA), and N-hydroxyethylethylenediamine-N, N', N'-triacetate (EDTAOH) were studied at 25°C, I=-0.90 in the pH range from 3.50 to 4.80. The application of these reactions to the complexometric titation of chromium (III) ion was also investigated. The reaction products were ascertained spectrophotometrically to be Cr(edta) (H2O)- and Cr(edtaOH)(H2O). Under the presence of a large excess of EDTA (EDTAOH) and sodium nitrite (sodium sulfite) to the concentration of chromium(III) ion, the formation rate of Cr(edta) (H2O)-{Cr(edtaOH)(H2O)} increases with increasing the concentrations of EDTA (EDTAOH) and sodium nitrite (sodium sulfite), but is not first-order dependence on the concentration of these reactants. In the case of sodium nitrite catalyst, the formation rate decreases with increasing of pH, but for sodium sulfite catalyst the rate increases with increasing of pH. The rapid coordination of nitrite or sulfite ions to chromium(III) ion may labilize the coordinated water for the substitution by EDTA or EDTAOH.
The chromium(III) ion solution containing EDTA was heated at 55°C for 10 min in the presence of 0.20 M sodium nitrite at pH 4.4. Then the chromium(III) ion could be back titrated against the standardized Th4+ solution using Xylenol Orange indicator. With sodium sulfite catalyst, the similar result was obtained.View full abstractDownload PDF (852K) -
Toru NOZAKI, Hiroshi YOSHIMURA, Tomio ONISHI, Kazuko DOKAN1976 Volume 25 Issue 10 Pages 698-701
Published: October 10, 1976
Released on J-STAGE: February 16, 2010
JOURNAL FREE ACCESSIon flotation of antimony(III) in hydrochloric acid solutions with cationic surfactant, cetylpyridinium chloride (CPC), was investigated. From 12.0 ml of (15) M hydrochloric acid solutions containing 11 to 110 ppm Sb(III) and 1.28×10-3 M CPC, 97% of antimony was removed by bubbling nitrogen through 2.7(dia) × 20 cm cell for 20 to 30 minutes. The reaction between chloroantimonate(III) ions and the surfactant can be considered as follows:
(n-3)R+Cl-+SbCln(n-3)-_??_
R(n-3)(SbCln)+(n-3)Cl-
where, R+ means the surfactant cation and n represents the mean number of Cl- coordinated in the complex anion. The relation between the mean number of the ligand Cl- and the concentration of hydrochloric acid was obtained by the mole ratio method and also by the continuous variation method. The existence of the species of SbCl4-, SbCl52- and SbCl63- was thus ascertained. The logarithms of the over-all stability constants, β4, β5 and β6, were found to be 4.4, 4.5 and 4.0, respectively, by the Fronaeous method.View full abstractDownload PDF (589K) -
Determination of total carbon in silicon carbide by gravimetry of carbon dioxide after alkali fusionAkira HOSHINO, Mitsuo ITO1976 Volume 25 Issue 10 Pages 702-705
Published: October 10, 1976
Released on J-STAGE: June 30, 2009
JOURNAL FREE ACCESSAn alkali fusion-gravimetric method has been applied to the determination of total carbon in silicon carbide which is used as abrasive materials and coated particle fuels.
Carbon in silicon carbide was converted by sodium hydroxide-sodium peroxide fusion into sodium carbonate, and determined after dissolving the sodium carbonate in excess of sulfuric acid. The effects of fusion fluxes, extraction temperature and time on the recovery of total carbon from silicon carbide were examined. Recommended procedure is as follows: transfer an accurately weighed sample of approximately 0.1 g of silicon carbide to a nickel crucible. Add 2.0 g of sodium hydroxide and 1.0 g of sodium peroxide as fusion fluxes, and mix well by gentle shaking. Inductively heat the mixture to 400°C for 10 min, and then 850°C for 20 min in an oxygen stream. Cool, and dissolve the melt in 100 ml of sulfuric acid (1+5). Absorb the carbon dioxide in Natronasbestos, and weigh. Correct the result by blank determination for 2.0 g of sodium hydroxide and 1.0 g of sodium peroxide.
Total carbon in NBS standard reference material (SRM 112, silicon carbide) was determined by the proposed method. The results were in good agreement with the certified value. The standard deviation was 0.3% for 29%-level of total carbon in silicon carbide samples.View full abstractDownload PDF (640K) -
Masayo MUROZUMI, Seiji NAKAMURA, Kozi ITO1976 Volume 25 Issue 10 Pages 706-711
Published: October 10, 1976
Released on J-STAGE: February 16, 2010
JOURNAL FREE ACCESSA minute amount of copper can be accurately determined by the isotope dilution mass spectrometry using a single rhenium filament as the surface ionization device. Silica gel and phosphoric acid serve as stabilizing agents for Cu+ emission. After being isotopically equilibrated with 0.1μg of 65Cu spike, copper in 50 g of sea water is extracted into 20 ml of 0.005% dithizone chloroform. Copper is back-extracted into 10 ml of 6 N hydrochloric acid, heated to dryness and is finally treated with each 0.2 ml of nitric acid and perchloric acid. The residue is dissolved in a mixed solution of 30 μl of 0.06% silica gel suspension water and 15μl of 0.9% phosphoric acid. An aliquot of the solution is analysed by a Hitachi RMU-6 type mass spectrometer. One tenth μg of copper usually emits stable Cu+ ion beam whose current intensity is of the level of (10-1410-15)A. The addition of optimum amount of stabilizing agents could increase the intensity of emitted copper ion beam by a factor of 10. The detection limit is 10-11 g for copper. The 63Cu+/65Cu+ value is recorded with the coefficient of variation smaller than 1.5%. Application of the method to Sagami bay water and central Pacific deep water showed that copper concentration is (0.34±0.01) ppb and (0.30±0.01) ppb in the former and (0.33±0.02) ppb in the latter.View full abstractDownload PDF (1005K) -
Takanori SUZUKI, Hiroshi MORINAGA1976 Volume 25 Issue 10 Pages 712-714
Published: October 10, 1976
Released on J-STAGE: February 16, 2010
JOURNAL FREE ACCESSA simple and sensitive method was investigated for determination of zinc in copper alloy. The method is based on the combination of anion exchange separation by batch operation and EDTA titration.
Sample is dissolved in 15 ml of HNO3(1+1) by heating, and resultant diluted to 200 ml with water. A 20 ml aliquot of this solution and 2 ml of H2SO4 (1+1) are taken into a beaker, and are evaporated to dryness. After cooling, the residue is dissolved in 2 N HCl by heating. The solution is transfered into the separatory funnel with a filter containing anion exchange resin Amberlite IRA-400, RCl form, (6080)mesh. The separatory funnel is shaken for 4 minutes to adsorb zinc ion. The solution in the funnel is sucked off. Resin is washed by shaking for 20 seconds with 25 ml of 2 N HCl (containing 0.01% Pb) and this operation is repeated (57) times. The adsorbed zinc ion is eluted with 20 ml of 2 N NH4OH (containing 40 g/l NH4Cl) by shaking for 2 minutes, and the eluent is filtered into an Erlenmeyer flask with suction, and this operation is repeated 5 times. The eluted solution is diluted to 200 ml with water, and mixed with 2 ml of potassium cyanide solution (10%) and 3 ml of formaldehyde solution (2+8) to mask the other metal ions. The solution is titrated with 0.02 M EDTA solution by using EBT as indicator.
The time required for this test was about half of a usual column method.View full abstractDownload PDF (461K) -
Michiko NAMIKI, Kichinosuke HIROKAWA1976 Volume 25 Issue 10 Pages 715-717
Published: October 10, 1976
Released on J-STAGE: June 30, 2009
JOURNAL FREE ACCESSA method for the spectrophotometric determination of phosphorus and arsenic in metallic molybdenum was investigated by the use of hydrazine sulfate for the reduction of heteropoly acid of phosphorus or arsenic which was formed in a sulfuric acid solution with molybdenum present in a sample. Silicon was removed by the usual procedure. Appropriate amounts of the solution corresponding to (80100) mg of molybdenum were transferred to a 100 ml volumetric flask. To the solution, 20 ml of water, 4 ml of sulfuric acid (1+1) and 2.5 ml of 0.15% hydrazine sulfate solution were added, and then diluted to about 50 ml. The flask was warmed in a boiling water bath for (1520) minutes. The content was cooled, and made up to 100 ml with water. The absorbance of the solution was measured at 825 nm against reagent by the use of 1-cm cell, so that the absorbance of phosphorus plus arsenic was measured. The determination of phosphorus was carried out in the same way as above, after arsenic was removed by usual procedure. The content of arsenic was estimated by the difference between the absorbance of phosphorus plus arsenic and that of phosphorus. This method was successfully applied to samples. The variation coefficient of eight determinations were 0.98% for phosphorus only, and 2.06% and 3.00% for simultaneous determinations of phosphorus and arsenic, respectively. The possible ranges of determination by the method were 0.01 to 0.1% phosphorus and 0.02 to 0.2% arsenic in molybdenum.View full abstractDownload PDF (549K) -
Kiyoaki KUWADA, Akira OUCHI, Kunihiko WATANUKI, Toshiaki SHIMADA1976 Volume 25 Issue 10 Pages 717-719
Published: October 10, 1976
Released on J-STAGE: June 30, 2009
JOURNAL FREE ACCESSAs the acetone solution of antimony(III) chloride was found to be very stable in a long time storage, the stability was tested by titration (potassium bromate method as well as complexometry), by colorimetry (Rhodamin B method), and by atomic absorption spectrometry (after extracted as diethyldithiocarbamate of antimony with methyl isobutyl ketone). When the (0.10.01) M solution was kept in a brown glass bottle doubly stoppered by a polyethylene inner stopper and a plastic screw outer one, or preferably in a sealed ampour of brown glass, the antimony in the solution determined by the titration did not change more than 80 days, nor the analyses by colorimetry and atomic absorption spectrometry, more than one month. In addition, the acetone is easily removed from the solution by evaporation, as the acetone does not make a strong coordination bond with antimony, nor is the adduct a stable one. This is also an additional benefit of the solution in using it as a standard of antimony analysis.View full abstractDownload PDF (519K)
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