کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1181997 1491616 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Accurate Determination of Sulphur Content in Sediments by Double Focusing Inductively Coupled Plasma Mass Spectrometry Combined with Microwave Digestion and Studies on Related Matrix Effect
ترجمه فارسی عنوان
تعیین دقیق میزان گوگرد در رسوبات با استفاده از اسپکترومتر جرمی پلاسما همراه با دوقطبی همراه با هضم مایکروویو و مطالعات مربوط به اثر ماتریکس مرتبط
کلمات کلیدی
هضم مایکروویو، طیف سنجی جرمی پلاسما به صورت القایی، رسوب، گوگرد، تداخل ماتریس، روش استاندارد کالیبراسیون اضافی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی

A robust method for measuring sulphur content in sediments was established using double focusing inductively coupled plasma mass spectrometry at medium resolution combined with microwave digestion technique. The capability of Standard curve method (SCM) and Standard addition method (SAM) using Rh as internal standard was compared in correction of the matrix effect. The results showed that the matrix effect was not suppressed by SCM, but was effectively eliminated by SAM with drawback of low sample throughout. Therefore, the Standard addition calibration method (SACM) was creatively proposed in this study, which could simply and easily correct the matrix effect as the matrix content of sample and standard solution was matched within ±50%. The detection limit and liner range of this method were proved to be 0.5 mg kg−1 and 3.0–1000 μg L−1, respectively, with spiked recovery of 95.8%-99.2%. Four sediment standard reference materials GBW07306, GBW07309, GBW07313 and SRM1646a were measured repetitively with the obtained sulphur contents of (853 ± 14) μg g−1 (2σ, n = 12), (181 ± 7) μg g−1 (2σ, n = 9), (3131 ± 52) μg g−1 (2σ, n = 12) and (3543 ± 70) μg g−1 (2σ, n = 9), respectively. The relative error of the four reference materials was +8.8%, +13.3%, +1.0% and +0.7%, respectively, with precision (RSD) less than 2%. This method was applied to measure the sulphur content in the sediment cores collected in the Yangtze Estuary and Hangzhou Bay. This proposed method was demonstrated as an accurate and rapid way of determining sulphur content in great batch of sediment samples, and has a broad application range including soil samples.

Standard addition calibration method (SACM) was creatively proposed for measuring sulfur content in sediments using double focusing inductively coupled plasma mass spectrometer combined with microwave digestion technique, which could simply and easily correct the matrix effect as the matrix content of sample and standard solution was matched within ±50%.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chinese Journal of Analytical Chemistry - Volume 44, Issue 2, February 2016, Pages 273–280
نویسندگان
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