کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10140957 | 1646048 | 2019 | 19 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Assessment of sorption capability of montmorillonite clay for lead removal from water using laser-induced breakdown spectroscopy and atomic absorption spectroscopy
ترجمه فارسی عنوان
بررسی قابلیت جذب خاک رس مونتموریلونیت برای حذف سرب از آب با استفاده از اسپکتروسکوپی تجزیه و تحلیل لایسنس و طیف سنجی جذب اتمی
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
Laser-induced breakdown spectroscopy (LIBS) and atomic absorption spectroscopy (AAS) techniques were applied for quantitative analysis of the remaining Pb content in water samples after treatment with a raw montmorillonite (MMT) and an organic derivative (MMO) clays for heavy metal removal, an issue of crucial importance for decontamination of water bodies. The Pb sorption capabilities of MMT and MMO clays were assessed by using solutions with known Pb concentrations, in the range 100-500â¯ppm. To carry out the LIBS analysis, the samples were prepared in the form of solid pellets with powdered calcium hydroxide addition. The measurement conditions were optimized to achieve reliable analytical results and the plasma parameters, i.e., temperature and electron density, were obtained. For quantification purpose, a calibration curve was constructed with the Pb I emission line at 4057.8â¯Ã
measured at the time window 30-45â¯Î¼s by using reference samples with Pb concentrations in the range 56-715â¯ppm. The Pb residual content in the liquid samples determined with LIBS showed a good agreement with those measured with AAS. The sorption efficiency of Pb from contaminated water was calculated through a sorption percentage SPb%. The calculated SPb% was higher for MMT (56%-100%) than for MMO (27%-47%). The results also demonstrated the usefulness of LIBS method for the determination of Pb concentrations in liquid samples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microchemical Journal - Volume 144, January 2019, Pages 159-165
Journal: Microchemical Journal - Volume 144, January 2019, Pages 159-165
نویسندگان
E.J. Terán, M.L. Montes, C. RodrÃguez, L. Martino, M. Quiroga, R. Landa, R.M. Torres Sánchez, D.M. DÃaz Pace,