网友您好, 请在下方输入框内输入要搜索的题目:
题目内容
(请给出正确答案)
二乙基二硫代氨基甲酸银分光光度法测定水中砷,当试样取最大体积50ml、用10mm比色皿时,可检测水中砷的上限浓度为()mg/L,最低检出浓度为()mg/L。
- A、0.10,0.001
- B、0.30,0.003
- C、0.50,0.007
- D、0.70,0.005
参考答案
更多 “二乙基二硫代氨基甲酸银分光光度法测定水中砷,当试样取最大体积50ml、用10mm比色皿时,可检测水中砷的上限浓度为()mg/L,最低检出浓度为()mg/L。A、0.10,0.001B、0.30,0.003C、0.50,0.007D、0.70,0.005” 相关考题
考题
二乙基二硫代氨基甲酸银分光光度法测定水中砷,当试取最大体积50ml、用10mm比色皿时,可检测水中砷的上限浓度为()mg/L,最低检出浓度为()mg/L.A、0.10,0.001B、0.30,0.003C、0.50,0.007D、0.07,0.005
考题
硼氢化钾-硝酸银分光光度法测定水中痕量砷,当取水样体积为250ml,用10mm比色皿时,该方法的最低检出浓度为()mg/L,测定上限为()mg/L.A、0.0001,0.004B、0.0002,0.008C、0.0003,0.0016D、0.0004,0.012
考题
填空题根据《水质甲醛的测定乙酰丙酮分光光度法》(GB/T13197—1991),当试样体积为25.0m1,比色皿为10mill时,甲醛的最低检出浓度为()mg/L,测定上限为()mg/L。
考题
判断题二乙基二硫代氨基甲酸银分光光度法测定水中砷时,对所用无砷锌粒的规格不需严格控制。A
对B
错
热门标签
最新试卷