Evaluation of the Transformation and Leaching Behavior of Two Polyfluoroalkyl Phosphate Diesters in a Field Lysimeter Study

被引：4

作者：

Laemmer, Rene ^{[2
]}

Weidemann, Eva ^{[1
]}

Goeckener, Bernd ^{[2
]}

Stahl, Thorsten ^{[3
]}

Breuer, Joern ^{[4
]}

Kowalczyk, Janine ^{[5
]}

Just, Hildegard ^{[5
]}

Boeddinghaus, Runa S. ^{[4
]}

Gassmann, Matthias ^{[1
]}

Kling, Hans-Willi ^{[6
]}

Buecking, Mark ^{[2
,7
]}

机构：

[1] Univ Kassel, Dept Hydrol & Subst Balance, D-34125 Kassel, Germany

[2] Fraunhofer Inst Mol Biol & Appl Ecol IME, Dept Environm & Food Anal, D-57392 Schmallenberg, Germany

[3] Chem & Vet Analyt Inst Munsterland Emscher Lippe, D-48147 Munster, Germany

[4] Ctr Agr Technol Augustenberg LTZ, D-76227 Karlsruhe, Germany

[5] German Fed Inst Risk Assessment, D-10589 Berlin, Germany

[6] Univ Wuppertal, Dept Chem & Biol, D-42119 Wuppertal, Germany

[7] Monash Univ, Fac Med Nursing & Hlth Sci, Sch Clin Sci Monash Hlth, Clayton, Vic 3800, Australia

来源：

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 2022年 / 70卷 / 45期

关键词：

PFAS; diPAPs; lysimeter; transformation; precursor; PFCAs; PERFLUOROALKYL SUBSTANCES PFASS; ENVIRONMENT; WATER; ACIDS; SOIL; ESTERS;

D O I：

10.1021/acs.jafc.2c03334

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

In this study, 6:2 and 8:2 polyfluoroalkyl phosphate diester (diPAP) were individually investigated in lysimeters under near-natural conditions. Leachate was sampled for 2 years, as was the soil after the experiment. In the leachate of the diPAPspiked soils, perfluorocarboxylic acids (PFCAs) of different chain lengths were detected [23.2% (6:2 diPAP variant) and 20.8% (8:2 diPAP variant) of the initially applied molar amount]. After 2 years, the soils still contained 36-37% 6:2 diPAP and 41-45% 8:2 diPAP, respectively, in addition to smaller amounts of PFCAs (1.5 and 10.6%, respectively). Amounts of PFCAs found in the grass were low (<0.1% in both variants). The recovery rate of both 6:2 diPAP and 8:2 diPAP did not reach 100% (63.9 and 83.2%, respectively). The transformation of immobile diPAPs into persistent mobile PFCAs and their transport into the groundwater shows a pathway for human exposure to hazardous PFCAs through drinking water and irrigation of crops.

引用

页码：14329 / 14338

页数：10