| 成都市锦江表层水和沉积物中有机磷酸酯的污染特征 |
| 摘要点击 2274 全文点击 768 投稿时间：2018-08-04 修订日期：2018-09-06 |
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| 中文关键词 有机磷酸酯阻燃剂(OPEs) 表层水 沉积物 污染特征 成都锦江 |
| 英文关键词 organophosphate esters (OPEs) surface water sediments pollution characteristics Jinjiang River |
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| 中文摘要 |
| 建立了气相色谱-质谱联用仪定量检测地表水及沉积物中7种典型有机磷酸酯阻燃剂的实验室分析检测方法：磷酸三丁酯（tri-n-butyl phosphate，TnBP）、磷酸三异辛酯［tris（2-ethylhexyl）phosphate，TEHP］、磷酸三丁氧乙酯（tributoxyethyl phosphate，TBEP）、磷酸三苯酯（triphenyl phosphate，TPhP）、磷酸三氯乙酯［tri（2-chloroethyl）phosphate，TCEP］、磷酸三氯丙酯（trichloropropyl phosphate，TCPP）、磷酸三（2，3-二氯丙基）酯（tridichloropropyl phosphate，TDCPP）.方法回收率为76%~119%（表层水）和83%~126%（沉积物）.采集并分析了成都市母亲河锦江的表层水及沉积物中7种有机磷酸酯（OPEs）的浓度及分布，发现其表层水中Σ7OPEs的浓度范围为689.09~10623.94 ng·L-1，平均值为3747.58 ng·L-1.各单体浓度水平顺序为TBEP > TCEP > TPhP > TEHP > TCPP > TnBP，其中浓度最高的单体TBEP占Σ7OPEs总浓度的36.50%~95.90%.沉积物中Σ7OPEs含量（以dw计）水平为25.52~296.00 ng·g-1，主要污染物为TBEP.沉积物相和水相中OPEs浓度没有显著的相关性，但均以烷基类OPEs为主.OPEs的分布主要受人为排放源的影响.表层水中TCPP和TnBP、TBEP和TEHP、TCEP和TPhP两两之间可能存在共同的来源. |
| 英文摘要 |
| New GC-MS methods were developed for seven typical organophosphate esters (OPEs) including tri-n-butyl phosphate (TnBP), tris (2-ethylhexyl) phosphate (TEHP), tributoxyethyl phosphate (TBEP), triphenyl phosphate (TPhP), tri (2-chloroethyl) phosphate (TCEP), trichloropropyl phosphate (TCPP) and tridichloropropyl phosphate (TDCPP). These methods were used to quantify their concentrations in the surface water and sediment from the Jinjiang River, Chengdu. The recoveries of the target substances were 76%-119% (surface water)and 83%-126% (sediments). Total OPEs (Σ7OPEs) ranged from 689.09 to 10623.94 ng·L-1, with the mean of 3747.58 ng·L-1 in the surface water. The pollution level of each monomer was in the order TBEP > TCEP > TPhP > TEHP > TCPP > TnBP. TBEP was the predominant pollutant, accounting for 36.50%-95.90% of the Σ7OPEs concentrations. The contents (dw) of the Σ7OPEs ranged from 25.52 to 296.00 ng·g-1 in sediments, and TBEP was also the main pollutant in these samples. No significant correlation existed between the concentrations of OPEs in the surface water and sediments. Alkyl OPEs were the main pollutants in the surface water and sediments. The distribution of OPEs was influenced by the source of emissions and environmental attributes. The pairs TCPP and TnBP, TBEP and TEHP, and TCEP and TPhP might have common sources in the surface water. |
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