Influence of soil on the uptake of perfluoroalkyl acids by lettuce: A comparison between a hydroponic study and a field study
(چکیده مقاله) :
Abstract :
This study explores whether mechanistic understanding of plant uptake of perfluoroalkyl acids (PFAAs)
derived from hydroponic experiments can be applied to soil systems. Lettuces (Lactuca sativa) were
grown in outdoor lysimeters in soil spiked with 4 different concentrations of 13 PFAAs. PFAA concentrations
were measured in soil, soil pore water, lettuce roots, and foliage. The PFAA uptake by the lettuce
was compared with uptake measured in a hydroponic study. The foliage:pore water concentration ratios
in the lysimeter were similar to the foliage:water concentration ratios from the hydroponic experiment.
In contrast, the root:pore water concentration ratios in the lysimeter were 1e2 orders of magnitude
lower than in the hydroponic study for PFAAs with 6 or more perfluorinated carbons. Hence, hydroponic
studies can be expected to provide a good quantitative measure of PFAA transfer from soil to foliage if
one accounts for soil:pore water partitioning and differences in transpiration rate. However, hydroponic
studies will be of little value for estimating PFAA transfer from soil to roots because sorption to the root
surface is greatly enhanced under hydroponic conditions
derived from hydroponic experiments can be applied to soil systems. Lettuces (Lactuca sativa) were
grown in outdoor lysimeters in soil spiked with 4 different concentrations of 13 PFAAs. PFAA concentrations
were measured in soil, soil pore water, lettuce roots, and foliage. The PFAA uptake by the lettuce
was compared with uptake measured in a hydroponic study. The foliage:pore water concentration ratios
in the lysimeter were similar to the foliage:water concentration ratios from the hydroponic experiment.
In contrast, the root:pore water concentration ratios in the lysimeter were 1e2 orders of magnitude
lower than in the hydroponic study for PFAAs with 6 or more perfluorinated carbons. Hence, hydroponic
studies can be expected to provide a good quantitative measure of PFAA transfer from soil to foliage if
one accounts for soil:pore water partitioning and differences in transpiration rate. However, hydroponic
studies will be of little value for estimating PFAA transfer from soil to roots because sorption to the root
surface is greatly enhanced under hydroponic conditions
(توضیحات تکمیلی) :
(توضیحات تکمیلی) :
Description :
مقاله ISI انگلیسی اصلی
سال انتشار: 2020
فایل ISI انگلیسی اصلی ، با فرمت Pdf
تعداد صفحات فایل ISI انگلیسی اصلی: 8 صفحه
سال انتشار: 2020
فایل ISI انگلیسی اصلی ، با فرمت Pdf
تعداد صفحات فایل ISI انگلیسی اصلی: 8 صفحه
Authors / Descriptions(نویسندگان/توضیحات): مقاله ISI سال انتشار2020 \ Sebastian Felizeter a, 1, Heinrich Jürling b, Matthias Kotthoff b, 2, Pim De Voogt a, c, Michael S. McLachlan
Sent date(تاریخ ارسال) :
1399/04/28 | 7/18/2020
Number of visits(تعداد بازدید):
616
Key words (کلمات کلیدی):
PFAA , Root uptake , Translocation , PFOA , PFOS
Number of pages(تعداد صفحات) :
8
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