کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4480891 1623066 2016 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Predicting runoff induced mass loads in urban watersheds: Linking land use and pyrethroid contamination
ترجمه فارسی عنوان
پیش بینی بارهای توده ناشی از رواناب در حوضه شهری: پیوند استفاده از زمین و آلودگی های Pyrethroid
کلمات کلیدی
GIS. و Pyrethroids؛ استفاده از زمین. آبخیزداری نهر Ballona؛ فاضلاب های سطحی ؛ سیاست
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
چکیده انگلیسی


• Pyrethroids discharged to a coastal estuary were quantified for four events.
• Total pyrethroid concentrations ranged from detection limit to 1408 ng/g.
• Water phase concentration of pyrethroids was calculated from the reported usage.
• Approximately 0.05% of the pyrethroid usage found its way into urban runoff.
• The model can estimate runoff pyrethroid concentration from limited data.

Pyrethroid pesticide mass loadings in the Ballona Creek Watershed were calculated using the volume-concentration method with a Geographic Information Systems (GIS) to explore potential relationships between urban land use, impervious surfaces, and pyrethroid runoff flowing into an urban stream. A calibration of the GIS volume-concentration model was performed using 2013 and 2014 wet-weather sampling data. Permethrin and lambda-cyhalothrin were detected as the highest concentrations; deltamethrin, lambda-cyhalothrin, permethrin and cyfluthrin were the most frequently detected synthetic pyrethroids. Eight neighborhoods within the watershed were highlighted as target areas based on a Weighted Overlay Analysis (WOA) in GIS. Water phase concentration of synthetic pyrethroids (SPs) were calculated from the reported usage. The need for stricter BMP and consumer product controls was identified as a possible way of reducing the detections of pyrethroids in Ballona Creek. This model has significant implications for determining mass loadings due to land use influence, and offers a flexible method to extrapolate data for a limited amount of samplings for a larger watershed, particularly for chemicals that are not subject to environmental monitoring. Offered as a simple approach to watershed management, the GIS-volume concentration model has the potential to be applied to other target pesticides and is useful for simulating different watershed scenarios. Further research is needed to compare results against other similar urban watersheds situated in mediterranean climates.

Figure optionsDownload high-quality image (260 K)Download as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Water Research - Volume 102, 1 October 2016, Pages 607–618
نویسندگان
, , , , , , ,