Turbidimetric determination of sulphate in waters employing flow injection and lead sulphate formation
RE Santelli, PRS Lopes, RCL Santelli… - Analytica chimica …, 1995 - Elsevier
RE Santelli, PRS Lopes, RCL Santelli, ADLR Wagener
Analytica chimica acta, 1995•ElsevierAn analytical flow-injection procedure based on PbSO4 colloidal formation is proposed as a
turbidimetric determination of sulphate in natural waters. Ethanol-water was used as a
medium in order to improve the sensibility of the method. Both chemical and flow variables
as well as interfering species were studied. A detection limit of 0.3 μg SO2− 4 ml− 1 was
found, and the analytical range (according to Beer's law) was 2–20 μg SO2− 4 ml− 1. The
precision was better than 3% RSD and the sample throughput was ca. 35 h− 1. The method …
turbidimetric determination of sulphate in natural waters. Ethanol-water was used as a
medium in order to improve the sensibility of the method. Both chemical and flow variables
as well as interfering species were studied. A detection limit of 0.3 μg SO2− 4 ml− 1 was
found, and the analytical range (according to Beer's law) was 2–20 μg SO2− 4 ml− 1. The
precision was better than 3% RSD and the sample throughput was ca. 35 h− 1. The method …
An analytical flow-injection procedure based on PbSO4 colloidal formation is proposed as a turbidimetric determination of sulphate in natural waters. Ethanol-water was used as a medium in order to improve the sensibility of the method. Both chemical and flow variables as well as interfering species were studied. A detection limit of 0.3 μg SO2−4 ml−1 was found, and the analytical range (according to Beer's law) was 2–20 μg SO2−4 ml−1. The precision was better than 3% R.S.D. and the sample throughput was ca. 35 h−1. The method, when compared with a standard methodology, gave good results when applied to water analysis.
Elsevier
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