Exploiting green analytical procedures for acidity and iron assays employing flow analysis with simple natural reagent extracts |
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Authors: | Grudpan Kate Hartwell Supaporn Kradtap Wongwilai Wasin Grudpan Supara Lapanantnoppakhun Somchai |
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Institution: | a Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand b Institute for Science and Technology Research and Development, Chiang Mai University, Chiang Mai 50200 Thailand c College of Art, Media and Technology, Chiang Mai University, Chiang Mai 50200, Thailand d Center of Excellence for Innovation in Analytical Science and Technology, Chiang Mai University, Chiang Mai 50200 Thailand |
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Abstract: | Green analytical methods employing flow analysis with simple natural reagent extracts have been exploited. Various formats of flow based analysis systems including a single line FIA, a simple lab on chip with webcam camera detector, and a newly developed simple lab on chip system with reflective absorption detection and the simple extracts from some available local plants including butterfly pea flower, orchid flower, and beet root were investigated and shown to be useful as alternative self indicator reagents for acidity assay. Various tea drinks were explored to be used for chromogenic reagents in iron determination. The benefit of a flow based system, which allows standards and samples to go through the analysis process in exactly the same conditions, makes it possible to employ simple natural extracts with minimal or no pretreatment or purification. The combinations of non-synthetic natural reagents with minimal processed extracts and the low volume requirement flow based systems create some unique green chemical analyses. |
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Keywords: | Natural reagents Flow based systems Simple lab on chip Reflective absorption detection Green chemical analysis |
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