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改良ＧＲ硝酸粉末试剂测定饮用水中硝酸盐氮广东省新会市卫生防疫站（５２９１００）范衍琼，蔡佳枚新会市新城自来水厂马佳广东省江门市职业病防治所卢启冰生活饮用水中硝酸盐氮的测定方法有二磺酸酚法及镉柱还原法￣［１］。前法干扰离子多，特别是氯离子干扰严重；后法...
Modified GR nitric acid powder reagent for determination of nitrate nitrogen in drinking water Xinhui City Health and Anti-Epidemic Station, Guangdong Province (529100) Fan Yanqiong and Cai Jiamei Xinhui Water Supply Plant Xinhui City Jiajia Occupational Disease Prevention and Control Institute, Jiangmen City, Guangdong Province Lu Qibing Nitrate nitrogen in drinking water Determination of disulfonic acid phenol method and cadmium column reduction method [1]. Pre-law interference ions, especially chloride interference serious; after the law ...