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Appl. Sci. 2017, 7(3), 264; doi:10.3390/app7030264

Determination of Boron, Phosphorus, and Molybdenum Content in Biosludge Samples by Microwave Plasma Atomic Emission Spectrometry (MP-AES)

1
Institute of Mass Spectrometry and Atmospheric Environment, Jinan University, No. 601 West Huangpu Avenue, Guangzhou 510632, China
2
Department of Chemical Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia
3
Agilent Technologies, CP-11, Sector-8, IMT, Manesar, Gurgaon 122 051, India
4
Council of Scientific and Industrial Research-National Geophysical Research Institute, Hyderabad 500007, India
*
Author to whom correspondence should be addressed.
Academic Editors: Adeloju Samuel B. and Jan Yperman
Received: 7 December 2016 / Revised: 3 March 2017 / Accepted: 3 March 2017 / Published: 8 March 2017
(This article belongs to the Section Chemistry)
View Full-Text   |   Download PDF [370 KB, uploaded 8 March 2017]   |  

Abstract

A novel analytical method for accurate determination of boron (B), phosphorous (P), and molybdenum (Mo) content in biosludge samples based on a relatively recent analytical technique, microwave plasma atomic emission spectrometry (MP-AES), is developed in the present work. Microwave assisted acid digestion method is utilized to extract B, P, and Mo from biosludge. To demonstrate the reliability and accuracy of the present MP-AES method, its results are compared with those obtained using two well-established techniques, i.e., flame atomic absorption spectrometry (FAAS) and inductively coupled plasma optical emission spectrometry (ICP-OES). Matrix variation in the MP-AES technique is found to result in minimal changes. Precision and accuracy of the developed method are demonstrated using replicate analyses of certified sewage sludge reference material, EnviroMAT (BE-1). The limit of quantification and detection of B, P, and Mo in the extracts are determined; the linear regression coefficient was greater than 0.998 for all the three techniques. Analytical wavelengths are selected according to the sensitivity and interference effects. The results obtained in this work demonstrate the potential of MP-AES technique for the determination of B, P, and Mo content in biosludge, which achieved lower detection limits, higher accuracy, and better reproducibility as compared to other techniques. View Full-Text
Keywords: biosludge; microwave assisted acid digestion; microwave plasma atomic emission spectrometry (MP-AES); boron; phosphorus; molybdenum; inductively coupled plasma optical emission spectrometry (ICP-OES); flame atomic absorption spectrometry (FAAS) biosludge; microwave assisted acid digestion; microwave plasma atomic emission spectrometry (MP-AES); boron; phosphorus; molybdenum; inductively coupled plasma optical emission spectrometry (ICP-OES); flame atomic absorption spectrometry (FAAS)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Vudagandla, S.; Siva Kumar, N.; Dharmendra, V.; Asif, M.; Balaram, V.; Zhengxu, H.; Zhen, Z. Determination of Boron, Phosphorus, and Molybdenum Content in Biosludge Samples by Microwave Plasma Atomic Emission Spectrometry (MP-AES). Appl. Sci. 2017, 7, 264.

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