Newly discovered bis-(2-ethylhexyl)-phenyl phosphate (BEHPP) was a ubiquitous contaminant in surface soils from a typical region, South China.
Newly discovered bis-(2-ethylhexyl)-phenyl phosphate (BEHPP) was a ubiquitous contaminant in surface soils from a typical region, South China.
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DOI：
10.1016/j.scitotenv.2021.145350
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发表时间：
2021-01
期刊：
影响因子：
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通讯作者：
Shuai Gong;Yirong Deng;Kefan Ren;Weikun Meng;Langjie Ye;Cunliang Han;Guanyong Su
中科院分区：
文献类型：
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作者：
Shuai Gong;Yirong Deng;Kefan Ren;Weikun Meng;Langjie Ye;Cunliang Han;Guanyong Su
有机磷酸酯（OPE），双-（2-乙基己基）-苯基磷酸盐（BEHPP），最近被确定为一个丰富的污染物在室内灰尘样品，然而，其在其他基质中的污染状况仍然未知。在此，从一个地级市采集了n= 95个表层土壤样品（以下简称D市），并进一步分析，以准确确定BEHPP和其他八种OPEs的浓度，包括tris三（2-氯乙基）磷酸酯（TCEP）（1，3-二氯-异丙基）磷酸酯（TDCIPP）、磷酸三苯酯（TPHP）、三（2-丁氧基乙基）磷酸三（TBOEP）、2-乙基己基二苯基磷酸（EHDPP）、三（2-丁氧基乙基）磷酸三磷酸（2-乙基己基）酯（TEHP）、磷酸4-联苯基二苯酯（BPDPP）和磷酸三（2-联苯基）酯（TBPHP）。BEHPP在该地区的所有六个功能区（农业，风景区，商业，工业和居民区）中检测到，并表现出67.4%的高检测频率，与0.455纳克/克干重（DW范围：nd-7.05纳克/克干重），无论功能区。商业区、工业区和居民区的样品中BEHPP浓度显著高于农业区和风景区。此外，BEHPP与其他OPE同类物之间存在强有力的统计学显着相关性，特别是TEHP（r= 0.764，p < 0.001）、TBOEP（r= 0.687，p < 0.001）和TPHP（r= 0.709，p < 0.001），这表明BEHPP可能与表层土壤中的这些化合物具有相似的商业应用和来源。总的来说，这项研究提供了BEHPP在土壤样品中存在的第一个证据，并表明，这种新兴的污染物广泛分布在所有五个功能区的一个典型区域（中国南方）。
The organophosphate ester (OPE), bis-(2-ethylhexyl)-phenyl phosphate (BEHPP), was recently identified as an abundant contaminant in indoor dust samples; however, its pollution status in other matrices remains unknown. Here,n= 95 surface soil samples were collected from a prefecture-level city (hereafter referred to as D city) in South China during 2019, and further analyzed to accurately determine the concentrations of BEHPP and eight other OPEs, including tris(2-chloroethyl) phosphate (TCEP), tris(1,3-dichloro-isopropyl) phosphate (TDCIPP), triphenyl phosphate (TPHP), tris(2-butoxyethyl) phosphatetris (TBOEP), 2-ethylhexyl diphenyl phosphate (EHDPP), tris(2-ethylhexyl) phosphate (TEHP), 4-biphenylol diphenyl phosphate (BPDPP), and tris(2-biphenyl) phosphate (TBPHP). BEHPP was detected in all six functional areas (agricultural, scenic, commercial, industrial, and residential areas) of this region, and exhibited a high detection frequency of 67.4%, with a median concentration of 0.455 ng/g dry weight (DW range: nd-7.05 ng/g dw), regardless of the functional area. Samples from commercial, industrial, and residential areas contained significantly greater BEHPP concentrations than those from agricultural and scenic areas. Furthermore, strong and statistically significant correlations were observed between BEHPP and other OPE congeners, particularly for TEHP (r= 0.764,p< 0.001), TBOEP (r= 0.687,p< 0.001), and TPHP (r= 0.709,p< 0.001), indicating that BEHPP may have similar commercial applications and sources to these compounds in surface soil. Collectively, this study provides the first evidence of the presence of BEHPP in soil samples, and indicates that this emerging contaminant is widely distributed across all five functional areas of a typical region (South China).