Simple test kit based on colorimetry for quantification of magnesium content in natural rubber latex by miniaturized complexometric titration without using masking agent
| Autor: | Sanoe Chairam, Purim Jarujamrus, Maliwan Amatatongchai, Nutthaporn Malahom, Rattapol Meelapsom, Atitaya Siripinyanond |
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| Rok vydání: | 2017 |
| Předmět: |
Green chemistry
Detection limit Chromatography Polymers and Plastics Magnesium 010401 analytical chemistry Organic Chemistry Analytical chemistry chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Colorimetry (chemical method) Complexometric titration 0104 chemical sciences chemistry Reagent Naked eye 0210 nano-technology Masking agent |
| Zdroj: | Polymer Testing. 59:160-167 |
| ISSN: | 0142-9418 |
| Popis: | A simple, low-cost and portable field test kit based on colorimetry with detection by naked eye was developed for determination of magnesium content in natural rubber latex (NRL). The miniaturized complexometric titration between Mg 2+ and EDTA without any masking agent was a key reaction in this development, which was designed according to the concept of green chemistry by reduction of waste generation and chemical and time consumption. The system enabled quantification of magnesium content in NRL at low concentration with the detection limit being −1 , small sample volume uptake (0.18 g, sampling by a small spoon) and use of 70 times less than that applied in the conventional method. Moreover, with the presence of potential interference ions, greater selectivity towards magnesium was observed. Furthermore, the reagents used in our developed test kit were stable for >6 months at room temperature. The results obtained on real samples were in agreement with those obtained from the conventional complexometric titration (ISO 17403: 2014(E)) method. The proposed technique provides a low-cost, rapid, simple, selective and on-site analysis of magnesium content in NRL. |
| Databáze: | OpenAIRE |
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