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- W2023116512 abstract "Novel selective and sensitive poly (vinyl chloride) membrane sensors are developed for measuring alizarin red S (AR) based on the use of aliquate 336, MgIIphthalocyanine (MgPc), CuIIphthalocyanine (CuPc) and FeII phthalocyanine (FePc) plasticized poly (vinyl chloride) membrane. The sensors display Nernestian response with slopes of -50.6 ± 0.6 , -37.4 ± 0.5 , -37.7 ± 0.8 and -35.0 ± 0.7 mV decade−1 over the range of 5.2 × 10−6 to 1 × 10−2 mol L−1 for all of them and detection limits of 5.9 × 10−7, 1.9 × 10-−6 2.3 × 10−6 and 1.9 × 10−6 mol L−1 for aliquate, MgPc, CuPc and FePc membrane based sensor, respectively. The sensors exhibit long life span, long term potential stability, high reproducibility, fast response and good discrimination ability towards alizarinate ion in comparison with many other anions. A tubular detector based on aliquate, MgPc, CuPc and FePc was further developed and coupled to a flow-injection system for alizarin (AR) determination. Under optimized conditions, the linearity range is 1.0 × 10−5- 1.0 × 10−1 mol L−1, with a slope of -52.1 ± 0.8, 20.9 ± 0.7, 23.6 ± 0.4 and 25 ± 1.1 mV decade−1 and a reproducibility of ± 0.8 mV (n = 6) for aliquate, MgPc, CuPc and FePc membrane based sensors, respectively. The sensor based on aliquate is further utilized for a potentiodynamic quantification of aluminum in sludge samples and deodorants. The buffered solution of alizarin was allowed to react in a flow system with aluminum. The calibration curve of Al was found to be linear over a concentration range of 0.1 to 1.8 and 1.0 - 40 μg mL−1 with a slope = 16.9 (r2 = 0.993) and 1.76 (r2 = 0.994) mV (μg/mL)−1 and a detection limit of 0.08 and 0.5 μg mL−1 for 10−4 and 10−3 mol L−1 AR− as a carrier, respectively. The method was successfully used for determining aluminum in sludge samples and deodorants. The data agree fairly well the nominal values and with results obtain by continuous flow hydride generation inductively coupled plasma (ICP) method." @default.
- W2023116512 created "2016-06-24" @default.
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- W2023116512 date "2013-11-08" @default.
- W2023116512 modified "2023-09-26" @default.
- W2023116512 title "Flow-Through Potentiometric Sensors for Alizarin Red S Dye and Their Application for Aluminum Determination" @default.
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- W2023116512 doi "https://doi.org/10.1002/jccs.201300293" @default.
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