Polymeric ionic liquid sorbent coatings in headspace solid-phase microextraction: A green sample preparation technique for the determination of pesticides in soil
Polymeric ionic liquid sorbent coatings in headspace solid-phase microextraction: A green sample preparation technique for the determination of pesticides in soil
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DOI：
10.1016/j.microc.2020.104996
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发表时间：
2020-09
影响因子：
4.8
通讯作者：
D. Orazbayeva;J. Koziel;M. J. Trujillo-Rodríguez;Jared L. Anderson;B. Kenessov
中科院分区：
文献类型：
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作者：
D. Orazbayeva;J. Koziel;M. J. Trujillo-Rodríguez;Jared L. Anderson;B. Kenessov
本文首次研究了一种绿色的利用新型聚合物离子液体（PIL）涂层的顶空固相微萃取（HS-SPME）方法对土壤样品中4种常用农药的分析。目标农药为环唑醇、氯氟吡氧乙酸、嗪草酮和乙氧氟草醚。三种含1-乙烯基苄基-3-十六烷基咪唑双[三氟甲基磺酰亚胺（PIL 1和PIL 2）和1-乙烯基-3-甲基-2-（三氟甲基）苯并[d]噻吩并[d]噻吩并（10-羟基癸基）咪唑鎓双[（三氟甲基）磺酰基]酰亚胺（PIL 3）单体和1，12-二（3-乙烯基苄基咪唑）十二烷双[（三氟甲基）磺酰基]酰亚胺（PIL 1）和1，本研究采用12-二（3-乙烯基苯并咪唑）十二烷双[（三氟甲基）磺酰基]酰亚胺（PIL 2和PIL 3）交联剂。在不同的提取温度（50-90 °C）和取样时间（15-60分钟）下，评价这些PIL涂层的性能，并与基于聚二甲基硅氧烷/二乙烯基苯（PDMS/DVB）和聚二甲基硅氧烷（PDMS）的商业SPME涂层进行比较。HS-SPME在90 °C下持续60分钟为大多数分析物提供了最高的灵敏度和足够的再现性。尽管具有较低的厚度，但PIL 2和PIL 3涂层提供了相似的分析物提取效率，并且与商业PDMS/DVB涂层相比，涂层体积归一化响应高24-247%。PIL 1吸附剂涂层的使用导致所有分析物的良好线性（R2 = 0.995-0.999）和较低的检测限（0.06-0.4 ng g−1）。优化的方法提供了可接受的加标浓度回收率，PIL 1涂层的性能更好（84-112%）。与其他已知的方法相比，目标农药在土壤中，所提出的方法提供了最高的符合原则的绿色分析化学评价使用分析生态尺度和绿色分析程序指数工具。
In this work, a green approach utilizing novel polymeric ionic liquid (PIL) coatings for headspace solid-phase microextraction (HS-SPME) of four current-use pesticides from soil samples was studied for the first time. Epoxiconazole, fluroxypyr, metribuzin, and oxyfluorfen were the target pesticides. Three PIL coatings containing 1-vinylbenzyl-3-hexadecylimidazolium bis[(trifluoromethyl)sulfonyl]imide (PIL1 and PIL2) and 1-vinyl-3-(10- hydroxydecyl)imidazolium bis[(trifluoromethyl)sulfonyl]imide (PIL3) monomers, and 1,12-di(3-vinylbenzylimidazolium)dodecane bis[(trifluoromethyl)sulfonyl]imide (PIL1) and 1,12-di(3-vinylbenzimidazolium)dodecane bis[(trifluoromethyl)sulfonyl]imide (PIL2 and PIL3) crosslinkers were employed in this study. The performance of these PIL coatings was evaluated and compared with commercial SPME coatings based on polydimethylsiloxane/divinylbenzene (PDMS/DVB) and polydimethylsiloxane (PDMS) at the different extraction temperatures (50–90 °C) and sampling times (15–60 min). HS-SPME at 90 °C for 60 min provided the highest sensitivity and adequate reproducibility for the majority of analytes. Despite having a lower thickness, PIL2 and PIL3 coatings provided similar extraction effectiveness of analytes, and 24–247% higher coating volume-normalized responses compared to the commercial PDMS/DVB coating. The use of the PIL1 sorbent coating resulted in excellent linearity (R2 = 0.995–0.999) and lower detection limits (0.06–0.4 ng g−1) for all analytes. The optimized method provides acceptable recoveries of spiked concentrations with better performance (84–112%) achieved with the PIL1 coating. Compared to other known methods for target pesticides in soil, the proposed method provides the highest compliance with the principles of green analytical chemistry evaluated using Analytical Eco-Scale and Green Analytical Procedure Index tools.