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ju yi xi chun cun zai xia jie jing zi za duo suan guang du fa ce ding di biao shui zhong wei liang lin suan yan he gui suan yan
Author(s): 
Pages: 231-232+257-258
Year: Issue:  3
Journal: Acta Academiae Medicinae Suzhou

Keyword:  polyvinyl alcoholcrystal violetheteropoly acidground waterphosphatesSilicates;
Abstract: In the presence of polyvinyl alcohol the optical condition for the quantitative formation of the ion-association of heteropoly phosphomolybdic acid and heteropoly silico-molybdic acidwith crystal violet in aqueous phase is described.The calibration curve was linear 0.5~6.0μg ofP/25ml and 0.1~10μg of Si/25ml.The molar absorptivity was 1.5×10~5(P)and 1.8×10~5(Si).This complex stands stably within 3 hours.This method has been applied to the trace analy-sis of P and Si in human hair and water with satisfactory results.
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