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Khair Un Nisa Attiq Ur Rehman Kakar Muhammad Asghar Samiullah Naqeebullah Niamatullah Arif Shah 《Luminescence》2023,38(5):647-661
A flow injection (FI) methodology using the acidic potassium permanganate (KMnO4)–rhodamine-B (Rh-B) reaction with chemiluminescence (CL) detection was established to determine acetochlor and cartap-HCl pesticides in freshwater samples. Experimental parameters were optimized, and Chelex-100 cationic exchanger mini column and solid-phase extraction (SPE) were used as phase separation techniques. Linear calibration curves were observed for the standard solutions of acetochlor and cartap-HCl over the ranges 0.005–2.0 mg L−1 [y = 1155.8x + 57.551, R2 = 0.9999 (n = 8)] and 0.005–1.0 mg L−1 [y = 979.76x + 14.491, R2 = 0.9998 (n = 8)] with LODs and LOQs of 7.5 × 10−4 and 8.0 × 10−4 mg L−1 (3σ blank) and 2.5 × 10−3 and 2.7 × 10−3 mg L−1 (10σ blank), respectively, with an injection throughput of 140 h−1. These methods were used to estimate acetochlor and cartap-HCl with or without the SPE procedure, respectively, in spiked freshwater samples. Results obtained were not significantly different at a 95% confidence level to those of other reported methods. Recoveries for acetochlor and cartap-HCl were obtained over the ranges 93–112% (RSD = 1.9–3.6%) and 98–109% (RSD = 1.7–3.8%), respectively. The most probable CL reaction mechanism was explored. 相似文献
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