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本文介绍了一种简易、快速、提取率好、定量精密度较高的煤焦油和沥青中BaP分析法。[试剂] (1)苯:一级品,取2l加500ml硫酸和200ml 30%发烟硫酸,搅拌混合两天后分离苯,用1l蒸馏水洗1次、500ml5%NaOH洗2次,再用1l蒸馏水洗2次,加无水硫酸钠脱水,蒸馏。(2)二甲基亚砜:分光纯,选用荧光性杂质少者。(3)BaP标准液:1μg/ml苯溶液。(4)展开剂:乙醚-乙醇-水(4:4:1,v/v),乙醚、乙醇用特级试剂。
This paper presents a simple, rapid, good extraction rate, high precision quantitative coal tar and asphalt BaP analysis. [Reagents] (1) benzene: a product, take 2l plus 500ml sulfuric acid and 200ml of 30% fuming sulfuric acid, benzene was separated after two days of mixing, washed with 1l of distilled water, 500ml5% NaOH washed twice, then 1l of distilled water Wash 2 times, add anhydrous sodium sulfate dehydration, distillation. (2) dimethyl sulfoxide: Pure spectroscopy, the use of fewer fluorescent impurities. (3) BaP standard solution: 1 μg / ml benzene solution. (4) developing solvent: ether - ethanol - water (4: 4: 1, v / v), ether, ethanol with special grade reagents.