本文件描述了全二维气相色谱-质谱/氢火焰离子化检测器测定煤基液相酚类化合物的试验方法。
本文件适用于下列沸点≤360 ℃的煤焦油和煤焦化废水中苯酚、C1 -苯酚、C2 -苯酚、C3 -苯酚、苯二酚、茚醇、萘酚、C1-萘酚类化合物的测定:
——煤焦油中苯酚的检出限为 0.015%,C1 -苯酚、C2 -苯酚的检出限为 0.035%,C3 -苯酚检出限为0.15%,苯二酚、茚醇、萘酚、C1-萘酚的检出限为 0.35%,且均为质量分数;
——煤焦化废水中苯酚的检出限为 1.5 mg/L,C1 -苯酚、C2 -苯酚的检出限为 2.5 mg/L,C3 -苯酚检出限为 5.0 mg/L,苯二酚、茚醇、萘酚、C1-萘酚的检出限为 15.0 mg/L。
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This standard specifies the sampling,the principle,the test method and the allowable error of the general method using the loss of mass on drying method for the determination of evaporation residues in fluorinated olefins for refrigerants use.
This standard is applicable to the determination of evaporation residues in fluorinated olefins for low,medium,and high pressure refrigerants use.The sensitivity of this methed is 0.000 1%.
定价: 288元 / 折扣价: 245 元 加购物车
This standard specifies of the general methods using Karl Fischer coulometric titration method and electrolytic method for the determination of moisture.
This standard is applicable to the determination of moisture in fluorinated olefins for refrigerant use,electrolytic method is not applicable to fluorinated olefins for low pressure refrigerants use.
定价: 288元 / 折扣价: 245 元 加购物车