The determination of phosphonate base scale inhibitors in brines by plasma spectrometry |
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| Authors: | Hosny Ibrahim Yousry M Issa Reda Kamal |
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| Institution: | (1) Department of Chemistry, Faculty of Science, Cairo University, Cairo, Egypt;(2) Gulf of Suez Petroleum Company (GUPCO), Maadi, Cairo, Egypt |
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| Abstract: | The determination of phosphonate base scale inhibitors in brines by direct current plasma (DCP) and inductively coupled plasma atomic emission spectrometry (ICP-AES) is described. The first method is based on a direct nebulization of the brine samples and plasma using the phosphorus line at 213.618 nm. The second method involves extraction of phosphorus as phospho-antimonyl molybdate complex into methylisobutyl ketone (MIBK) phase and analysis of the extract for molybdenum using the Mo 313.260 nm line. Comparison between the proposed methods and an established recommended method 1] shows excellent agreement between the results in addition to the sensitivity and ease of automation provided by AES. |
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| Keywords: | phosphonate base scale inhibitor brine direct current plasma inductively coupled plasma atomic emission spectrometry phosphorus |
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