[Quality assurance/quality control for the determination of polycyclic aromatic hydrocarbons and phthalate esters in soils using gas chromatography-mass spectrometry].
A method for the determination of polycyclic aromatic hydrocarbons (PAHs) and phthalate esters (PAEs) in soil samples by gas chromatography-mass spectrometry (GC-MS) was developed. After extracted by accelerated solvent extraction or ultrasonic extraction by dichloromethane-hexane (1:1, v/v) and dichloromethane-acetone (1:1, v/v), respectively, the extracts were cleaned up by solid phase extraction and/or gel permeation chromatography. Quality control and quality assurance procedures were carried out with the methods of whole procedure blank, blank spike recovery, clean soil matrix spike recovery, and the comparison with reference materials. The method detection limits were 0.13-2.2 microg/kg and 0.19-0.52 microg/kg and the average recoveries were 41.5%-116.9% 90.7%-107.1% for the PAHs and the PAEs, respectively. The results showed that the method can meet the technical requirements on the soil sample test and analysis in the national survey of soil pollution.
Zhang
Lifei
L
State Environmental Protection Key Laboratory of Diorin Pollution Control, National Research Center for Environmental Analysis and Measurement, Beijing 100029, China.
Huang
Yeru
Y
Shi
Shuangxin
S
Zhou
Li
L
Dong
Liang
L
Zhang
Ting
T
Zeng
Liangzi
L
Mi
Fangzhuo
F
Shao
Dingding
D