[Determination and status quo survey of phathalic acid esters in air of plastic production logistics by GC-MS].
OBJECTIVE
To establish GC-MS method for the determination of phathalic acid esters (PAEs) in the air of plastic production logistics, and conduct a status quo survey of PAEs pollution in occupational environments basing on it.


METHODS
The determination method was established according to the Monitor Investigating Guidelines on Poisons in Workplace Air, and then used to determine samples collected to carry out an on-the-spot investigation.


RESULTS
Calibration curves of the six PAEs were proved to be all linear in the range of 2-1000 ng/ml, equivalent to 0.67-333 microg/m3 in the air considering 3 L air sample was collected. The sensitivities were high with all limits of detection lower than 1 ng/ml, i.e., the minimum detectable concentrations of the six PAEs were all lower than 0.33 microg/m3. Intra-day precision and accuracies were all good, with relative standard deviation in the range of 3.0%-7.8% and recoveries in the range of 93.1%-105.1% respectively. And inter-day precision and accuracies were 3.4%-9.9% and 93.4%-106.4% correspondingly. The eluting efficiency was 92.9%-97.9%, and the sampling efficiencies were nearly 100%. The breakthrough capacities were all larger than 1.4 mg. And samples could be stored stably at room temperature for 7 days. The selectivity of this method was good. Results of status quo survey indicated that the PAEs pollution in the air of plastic production logistics was not serious, and no obvious clinical symptoms and signs were found in those occupationally-exposed workers.


CONCLUSIONS
This method meets the demand of the Monitor Investigating Guidelines on Poisons in Workplace Air, and thus then could be applied to determine PAEs in the air of plastic production logistics.
He
Yuhua
Y
School of Economics and Management, Zhejiang Business Technology Institute, Ningbo 315012, China. yuhua_he@163.com
Guo
Zhiyong
Z
D000393:Air Pollutants / Q000032:analysis* / Q000737:chemistry; D002617:Chemical Industry; D002681:China; D004784:Environmental Monitoring / Q000379:methods*; D004952:Esters / Q000032:analysis; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D006801:Humans; D007220:Industrial Waste; D016273:Occupational Exposure; D010795:Phthalic Acids / Q000032:analysis* / Q000737:chemistry; D010969:Plastics
D000393:Air Pollutants; D004952:Esters; D007220:Industrial Waste; D010795:Phthalic Acids; D010969:Plastics