Determination of silicon in natural waters by spectrophotometry using modern methods of sample preparation
The main aim of the study is to develop modern methods of preparing natural water samples using ultrasound, ultraviolet radiationand photocatalytic systems for destruction of polysilicic acids and silicon complexes with humic substances to determine soluble siliconby spectrophotometric method. The m...
| Main Authors: | , , |
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| Format: | Article |
| Language: | Russian |
| Published: |
Tomsk Polytechnic University
2017-08-01
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| Series: | Известия Томского политехнического университета: Инжиниринг георесурсов |
| Subjects: | |
| Online Access: | http://izvestiya-tpu.ru/archive/article/view/1901 |
| Summary: | The main aim of the study is to develop modern methods of preparing natural water samples using ultrasound, ultraviolet radiationand photocatalytic systems for destruction of polysilicic acids and silicon complexes with humic substances to determine soluble siliconby spectrophotometric method. The methods used in the study: spectrophotometry, IR spectroscopy, inductively coupled plasma mass spectrometry (ICP-MS). The results. The use of ultrasound, ultraviolet radiation and Fenton photocatalytic systems the authors have studied destruction of polysilicic acids and silicon complexes with humic substances to develop modern and effective methods of preparing natural water samples in spectrophotometric determination of soluble silicon in the form of silicon molybdenum yellow complex by reference procedure. It was shown that the photochemical Fenton system is the most effective for sample preparation. The developed procedure of sample preparation was applied for analysis of thermal and bog waters on dissolved silicon by spectrophotometry. The correctness of the method was confirmed by comparison of the results obtained by spectrophotometry and ICP-MS using the inspection standard. Under ultraviolet radiation, polysilicic acids are destroyed that can be used for quantification of different forms of silicic acids by spectrophotometric method. It was found that ultrasonic pre-treatment is not suitable for spectrophotometric control of soluble forms of silicon. |
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| ISSN: | 2500-1019 2413-1830 |