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实验采用微波消解法消解样品,用原子吸收法在同一体系溶液中连续测定天然胶乳中铜和锰,传统方法采用干灰法或酸消化法消解样品,分光光度法测定,实验证明本法较传统方法节约时间、提高灵敏度和准确度,对人员及环境污染减少,该方法是一种比较好的测定天然胶乳中铜和锰的方法。通过试验测出铜和锰检出限分别为0.28μg/mL和0.15μg/mL,测定精密度的RSD值分别为1.17%和1.05%,铜加标回收率在94.43%～103.40%,锰加标回收率在91.30%～113.64%。
In the experiment, the samples were digested by microwave digestion, the copper and manganese in natural latex were determined by atomic absorption spectrometry in the same system. The traditional method was determined by spectrophotometry with dry ash method or acid digestion. The experiment proved that the method is more traditional The method saves time, improves sensitivity and accuracy, and reduces personnel and environmental pollution. This method is a good method for determining copper and manganese in natural latex. The detection limits of copper and manganese were 0.28μg / mL and 0.15μg / mL, respectively. The RSDs of determination precision were 1.17% and 1.05% respectively. The recoveries of copper were 94.43% ~ 103.40% The standard recoveries ranged from 91.30% to 113.64%.