Abstract
Changes in the effects of linear alkylbenzenesulfonate (LAS) on the growth of sporelings of Porphyra yezoensis were studied during biodegradation in sea water to determine its compatibility with aquatic organisms. The bioassay results showed inhibition by commercial LAS of the growth of sporelings to decrease on biodegradation in sea water and the longer alkyl chain homologues and outer phenyl isomers of LAS to effect the degree of toxicity toward sporeling growth.
The results of the chemical analysis by GLC showed the toxic components in commercial LAS to decrease more rapidly than other components during biodegradation in sea water. The toxicity of commercial LAS toward aquatic organisms in sea water is considered to decrease when its effective components undergo biodegradation
