Thorium Coprecipitation Method for Spectrophotometric Determination of Arsenic(III) and Arsenic(V) in Groundwaters

Yuzo TAMARI; Nobuki YAMAMOTO; Haruo TSUJI; Yuzuru KUSAKA

doi:10.2116/analsci.5.481

Yuzo TAMARI, Nobuki YAMAMOTO, Haruo TSUJI, Yuzuru KUSAKA

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Keywords: Arsenic, coprecipitation, thorium hydroxide, groundwater, spectrophotometry, silver diethyldithiocar-bamate

JOURNAL FREE ACCESS

1989 Volume 5 Issue 4 Pages 481-484

DOI https://doi.org/10.2116/analsci.5.481

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Published: August 10, 1989 Received: January 26, 1989 Available on J-STAGE: June 30, 2006 Accepted: June 15, 1989 Advance online publication: - Revised: -
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Date of correction: June 30, 2006 Reason for correction: - Correction: CITATION Details: Wrong : 1). National Research Council, "Medical and biological effects of environmental pollutants No. 16, Hiso", translated by A. Hisanaga and N. Ichinishi, p. 19, Tokyo-Kagaku-Dojin, 1985.
2). S. Maeda, Kagaku-no-ryoiki, 37, 606 (1983).
3). Y. Tamari, K. Nishimura, H. Tsuji and Y. Kusaka, Bull. Chem. Soc. Jpn., 59, 2273 (1986).
4). Y. Tamari, K. Nishimura, M. Kitagawa, H. Maki, S. Matsumoto, H. Tsuji and Y. Kusaka, Mem. Konan Univ., Sci. Ser., 34, 1(1987).
5). G. Charlot, "Teisei Bunseki Kagaku II", translated by K. Sone and M. Tanaka, p. 411, Kyoritsu Shuppan, Tokyo, 1977.
6). C. Wadeline and M. G. Mellon, Analyst[London], 77, 708 (1952); cited in "Solvent Extraction in Analytical Chemistry" by G. H. Morrison and H. Freiser.
7). "Muki Ohyo Hishoku Bunseki No. 1 (Applied Inorganic Spectrophotometry, in Japanese)", p. 136, Kyoritsu Shuppan, Tokyo, 1973.
8). S. Nakaya, Bunseki Kagaku, 12, 241 (1963).
9). K. Tanaka, Bunseki Kagaku, 10, 612 (1961).
10). E. Kaneko, Bunseki Kagaku, 27, 250 (1978).
11). H. Tsuji, K. Nishimura, Y. Tamari and Y. Kusaka, Bunseki Kagaku, 33, 43 (1984).
12). G. Leung, Y. S. Kim and H. Zeitlin, Anal. Chim. Acta, 60, 229 (1972).
13). Y. Tamari, M. Kitagawa, H. Tsuji and Y. Kusaka, Bull. Soc. Sea Water Sci. Jpn., 42, 241 (1989).
14). Y. Tamari, H. Tsuji and Y. Kusaka, Chikyukagaku, 22, 139 (1989).
15). Y. Tamari, A. Takada, H. Tsuju and Y. Kusaka, Anal. Sci., 4, 277 (1988).

Right : 1). National Research Council, "Medical and biological effects of environmental pollutants No. 16, Hiso", translated by A. Hisanaga and N. Ichinishi, p. 19, Tokyo-Kagaku-Dojin, 1985.
2). S. Maeda, Kagaku-no-ryoiki, 37, 606 (1983).
3). Y. Tamari, K. Nishimura, H. Tsuji and Y. Kusaka, Bull. Chem. Soc. Jpn., 59, 2273 (1986).
4). Y. Tamari, K. Nishimura, M. Kitagawa, H. Maki, S. Matsumoto, H. Tsuji and Y. Kusaka, Mem. Konan Univ., Sci. Ser., 34, 1(1987).
5). G. Charlot, "Teisei Bunseki Kagaku II", translated by K. Sone and M. Tanaka, p. 411, Kyoritsu Shuppan, Tokyo, 1977.
6). C. Wadeline and M. G. Mellon, Analyst[London], 77, 708 (1952); cited in "Solvent Extraction in Analytical Chemistry" by G. H. Morrison and H. Freiser.
7). "Muki Ohyo Hishoku Bunseki No. 1 (Applied Inorganic Spectrophotometry, in Japanese)", p. 136, Kyoritsu Shuppan, Tokyo, 1973.
8). S. Nakaya, Bunseki Kagaku, 12, 241 (1963).
9). K. Tanaka, Bunseki Kagaku, 10, 612 (1961).
10). E. Kaneko, Bunseki Kagaku, 27, 250 (1978).
11). H. Tsuji, K. Nishimura, Y. Tamari and Y. Kusaka, Bunseki Kagaku, 33, 43 (1984).
12). G. Leung, Y. S. Kim and H. Zeitlin, Anal. Chim. Acta, 60, 229 (1972).
13). Y. Tamari, M. Kitagawa, H. Tsuji and Y. Kusaka, Bull. Soc. Sea Water Sci. Jpn., 42, 241 (1989).
14). Y. Tamari, H. Tsuji and Y. Kusaka, Chikyukagaku, 22, 139 (1989).
15). Y. Tamari, A. Takada, H. Tsuju and Y. Kusaka, Anal. Sci., 4, 277 (1988).

Date of correction: June 30, 2006 Reason for correction: - Correction: PDF FILE Details: -

Abstract

A new coprecipitation method for the spectrophotometry of arsenic(III) and arsenic(V) in groundwater has been developed. Arsenic(III) and arsenic(V) were coprecipitated with thorium(IV) hydroxide from 1000 ml of groundwater at pH 9. The precipitate was centrifuged and then dissolved with hydrochloric acid. Arsenic(III) was spectrophotometrically determined by the usual silver diethylditiocarbamate (Ag-DDTC) method after generating the arsenic to arsine with sodium tetrahydroborate under masking the thorium with EDTA-NaF at pH 6. From another portion of the same groundwater, both arsenic(III) and arsenic(V) were determined by the Ag-DDTC method after reducing all the arsenic to arsine with sodium tetrahydroborate at pH less than 1 in the presence of the EDTA-NaF. The concentration of arsenic(V) was obtained by subtracting that of arsenic(III) from the total for arsenic.

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