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2 protocols using fe2 so4 3

1

Synthesis and Characterization of Bismuth Complexes

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Analytical reagents of Bi(NO3)3·5H2O, KI, C2H6O2, Fe2(SO4)3, MnSO4·H2O, ZnSO4·7H2O, NaOH, C28H31ClN2O3, and HNO3 were used as raw materials for sample preparation, and were provided by Chengdu Kelong Chemical Ltd (Chengdu, China).
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2

Preparation and Analysis of Chemical Reagents

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CA (>97%) and sorbic acid were purchased from TCI Reagent Co. Ltd. (Shanghai, China). HPLC-grade reagents (acetonitrile, methanol, etc.) were obtained from Shanghai ANPEL Scientific Instrument Co. Ltd. (Shanghai, China). Benzoic acid (99.5%) and sodium azide (99%) were purchased from Aladdin Industrial Corporation (Shanghai, China), and furfuryl alcohol (FFA) (99%) was purchased from the Sigma-Aldrich Company. Acetic acid (99%), isopropanol (99.7%), humic acid, NaOH, H2SO4, MgSO4, ZnSO4, CuSO4, Fe2(SO4)3, NaCl, NaNO3, NaHCO3 and KH2PO4 were obtained from Chengdu Kelong Chemical Reagent Co. Ltd. (Sichuan, China). All reagents were of analytical grade and were used without further purification. Ultrapure water (resistance > 18.2 MΩ) was produced by a water purification system (TKA, Germany).
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