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共振线处于远紫外区的磷和硫元素,不能用一般的原子吸收法直接进行测定。我们在Christian和Feldman及El-Shaarawy提出的间接测定正磷酸根、硫酸根的原子吸收法的基础上进行了改进,结合采用W.Schniger氧瓶燃烧方法破坏有机试样,使有机磷和硫化合物分别转化成磷酸根和硫酸根。对若干有机磷和硫测定与容量法结果相符。磷和硫分析绝对误差为±0.3%。当磷和硫共存时不宜直接使用本法。
Resonance line in the far ultraviolet region of phosphorus and sulfur, can not be directly determined by the general atomic absorption method. Based on the indirect determination of orthophosphate and sulfate by the methods proposed by Christian and Feldman and El-Shaarawy, we improved the atomic absorption spectrophotometry and combined the W.Schniger oxygen flask combustion method to destroy the organic sample and make the organophosphorus and sulfur compounds Respectively, into phosphate and sulfate. A number of organic phosphorus and sulfur determination and volume results consistent. The absolute error of phosphorus and sulfur analysis is ± 0.3%. This method should not be used directly when phosphorus and sulfur coexist.