EPA GRO Mix，分析标准品
组分如下： Benzene 500 μg/mL
Ethylbenzene 500 μg/mL
Heptane 500 μg/mL
2-Methylpentane 1500 μg/mL
Toluene 1500 μg/mL
1,2,4-Trimethylbenzene 1000 μg/mL
2,2,4-Trimethylpentane 1500 μg/mL
o-Xylene 1000 μg/mL
m-Xylene 1000 μg/mL
