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- W4313291204 abstract "The study in this research is based on the needed for alternative student worksheet of analytical chemistry course on the concept of anion reactions. This research aims to determined the heavy metal content in fish and water of Cisangkuy river as content material to develop Student Writing Heuristic (SWH)-based students' worksheet. SWH worksheet are created by using research Development method. Instruments used in this study include the feasibility test format of student worksheet, questionnaire feasibility test student worksheet, and assessment tools of student worksheet. The concentration of chromium in fish in Cisangkuy river using AAS is 0.0691 mg / L, in the water is 0.2205 mg / L for sample 1 and 0.4871 for sample 2. The concentration is still below the threshold established by Government Regulation of the Republic of Indonesia Number 82 of 2001, the maximum allowable level for chromium metal (Cr) is 0.5 mg / L. While, based on SWH student format on chromium analysis in fish and water in Cisangkuy River has been validated with the average value of rcount obtained at 0.83 and the average feasibility of presentation is 83%. It means SWH worksheet available to use by student." @default.
- W4313291204 created "2023-01-06" @default.
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- W4313291204 date "2022-01-01" @default.
- W4313291204 modified "2023-09-30" @default.
- W4313291204 title "Developing of science writing heuristic worksheet on chromium analysis in fish and water of Cisangkuy River" @default.
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- W4313291204 doi "https://doi.org/10.1063/5.0102797" @default.
- W4313291204 hasPublicationYear "2022" @default.
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