Determination of Phthalate Esters in the Atmosphere by LC/MS/MS.

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  • 液体クロマトグラフィー／タンデム質量分析法による大気中のフタル酸エステル類の定量
  • エキタイ クロマトグラフィー タンデム シツリョウ ブンセキホウ ニ ヨル タイキ チュウ ノ フタルサン エステルルイ ノ テイリョウ

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Abstract

A analytical method was developed for the determination of phthalate ester plasticizers {diisononylphthalate (DINP), diisodecylphthalate (DIDP) and diisotridecylphthalate (DITP)} in the atmosphere by liquid-chromatography/tandem mass spectrometry(LC/MS/MS). The ionization mode was positive-APCI (atmospheric pressure chemical ionization) and [M+H]+ ions were formed, which then fragmented by collosion with nitrogen. Sample air was drawn for 24 h at a constant flow rate (12∼14 l/min) through a quartz fiber filter. After the collected substances were extracted into acetonitrile, di-(2-ethylhexyl)phthalate-d4 (DEHP-d4) was added as an internal standard. The recoveries, relative standard deviation (RSD) and limit of detection (LOD) were 94∼102%, 4.3∼8.7% and 0.05∼0.8 ng/m3, respectively. DINP and DIDP were detected in outdoor and indoor air samples, including clearn room air; concentrations were 1.2∼9.6 and 0.1∼1.4 ng/m3, respectively. Because these phthalate esters are semi-volatile and include a mixture of many isomers, it is hard to obtain high analytical accuracy and precision by gaschromatograhy. The present method could be used to determine DINP and DIDP in air with high sensitivity.<br>

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 52 (1), 15-20, 2003

    The Japan Society for Analytical Chemistry

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