کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6358193 1315627 2014 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
NoteBioconcentration of the anionic surfactant linear alkylbenzene sulfonate (LAS) in the marine shrimp Palaemonetes varians: A radiotracer study
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات اقیانوس شناسی
پیش نمایش صفحه اول مقاله
NoteBioconcentration of the anionic surfactant linear alkylbenzene sulfonate (LAS) in the marine shrimp Palaemonetes varians: A radiotracer study
چکیده انگلیسی


- The marine shrimp Palaemonetes varians concentrates waterborne linear alkylbenzene sulfonate (LAS).
- Size/weight plays a role in the LAS concentration in shrimp.
- The LAS previously concentrated in the shrimp are rapidly depurated and weakly retained.
- Shrimp's target compartments for concentration of waterborne LAS are mainly located in the cephalothorax.

Uptake and depuration kinetics of dissolved [14C]C12-6-linear alkylbenzene sulfonate (LAS) were determined in the shrimp Palaemonetes varians using environmentally relevant exposure concentration. The shrimp concentrated LAS from seawater with a mean BCF value of 120 L kg−1 after a 7-day exposure. Uptake biokinetics were best described by a saturation model, with an estimated BCFss, of 159 ± 34 L kg−1, reached after 11.5 days. Shrimp weight influenced significantly BCF value with smaller individuals presenting higher affinity to LAS. To the light of a whole body autoradiography, major accumulation of LAS occurred in the cephalothorax circulatory system (gills, heart, hepatopancreas) and ocular peduncle, but not in the flesh, limiting potential transfer to human consumers. LAS depuration rate constant value of the shrimp was 1.18 ± 0.08 d−1 leading to less than 1% of remaining LAS in its tissues after 8 days of depuration.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Marine Pollution Bulletin - Volume 85, Issue 1, 15 August 2014, Pages 244-247
نویسندگان
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