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尿中砷的含量对于砷中毒的诊断有重要的意义。尿砷的测定长期以来应用二乙基二硫代氨基甲酸银盐(DDCAg)比色法和砷斑法,前法操作繁琐,后法结果较粗属半定量。有报道,二硫代安替比林甲烷(DTPM)是目前光度法测定砷的最灵敏方法之一,在高酸度下能与砷、金、钼、锑、铅、锡等十多种元素形成稳定的络合物。陈婉如等也曾报道用该试剂分光光度法测定大苏打及洗硫废水中的砷,认为该试剂反应选择性好,
Urinary arsenic content for the diagnosis of arsenic poisoning is of great significance. Determination of urinary arsenic has long been the application of DDGAg colorimetric and arsenic spot method, the former method is cumbersome to operate, the latter method results are more semi-quantitative. It has been reported that dithioantipyrine methane (DTPM) is one of the most sensitive methods for the determination of arsenic by spectrophotometry. It can form more than ten elements such as arsenic, gold, molybdenum, antimony, lead and tin under high acidity Stable complex. Chen Wanru et al. Also reported the spectrophotometric determination of arsenic in the soda ash and the sulfur-washing waste water by using the reagent. The reagent is considered to have good reaction selectivity,