Florida Total Petroleum Hydrocarbon Standards Mixture - TPH 500 ug/ml in Hexane
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Massachusetts EPH Aliphatic Hydrocarbon Standards Mixture 1000 ug/ml in Hexane
M-USTALMA1J4-1ML | 1ML
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Washington EPH Aliphatic Hydrocarbon Standards Mixture 1000 ug/ml in Hexane
M-USTALWA1J4-1ML | 1ML
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Petroleum Hydrocarbons (TPH) Mixture in Tetrachloroethylene Standard Sample for Analysis and Calibration
B45784-10ml | 10ml
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石油类标准溶液(红外法) Total Petroleum Hydrocarbons (TPH) Mixture
P141102-10ml | 10ml
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Surrogate Standards Mixture - 525.2 500 ug/ml in Acetone
M-SS5251B3-1ML | 1ML
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Internal Standard Mixture - 525 500 ug/ml in Acetone
M-IS525B3-1ML | 1ML
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Internal Standard Mixture - 525 500 ug/ml in Acetone
M-IS525B3-5ML | 5ML
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规格:1ML
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2. 平行样相对偏差应≤15%;
3. 加标回收率控制在80%-120%;
4. 标准曲线相关系数R²≥0.995。
2. 净化处理:萃取液通过硅酸镁吸附柱去除极性杂质;
3. 浓缩定容:氮吹浓缩至1 mL后转移至比色皿;
4. 仪器分析:校准仪器后测定荧光强度并计算浓度。
2. 正己烷纯度要求≥色谱纯,避免溶剂背景干扰;
3. 高盐度或高浊度样品需增加离心或过滤预处理;
4. 标准溶液现配现用,开封后需-20℃避光保存。
以上信息仅供参考,请以相应标准的原文为准!