Reference

Determination of aluminum in water after purification by coagulation

Determination of aluminum in water after purification by coagulation. Balek, Michal (Hydroprojekt, Prague, Czech.Several substances are used for example 7732-18-5 and 7440-50-8 which are their cas registry numbers.). Vodni Hospod.: B, 36(9), 248-52 (Czech) 1986. CODEN: VHOBAF. ISSN: 0322-8231. DOCUMENT TYPE: Journal CA Section: 61 (Water) Section cross-reference(s): 79 Low concns. of Al, remaining in potable or industrial water after treatment with Al2(SO4)3, were detd. colorimetrically using aluminon [569-58-4] as the color reagent. Interfering ions were removed as follows: Fe by complexing with thioglycolic acid [68-11-1], S2- by digestion with H2O2, and traces of Cr, Co, and Cu by the CSN 420620 method (only when required). The effect of F- could be eliminated by correcting the calibration curve. The method could detect 0.0086 mg/L Al. The std. deviation at 4.054 Al/L concn. was 1.8%. .

Automatic flow-injection colorimetric determination of available aluminum in soils

Automatic flow-injection colorimetric determination of available aluminum in soils. Cui, Hongbo; Meng, Lihong; Zhu, Zhaohai (Inst. For. Soil Sci., Acad. Sin., Shenyang, Peop. Rep. China). Fenxi Huaxue, 12(8), 754-6 (Chinese) 1984. CODEN: FHHHDT. ISSN: 0253-3820. DOCUMENT TYPE: Journal CA Section: 19 (Fertilizers, Soils, and Plant Nutrition) Section cross-reference(s): 79 A simple automatic flow-injection colorimetric method for the routine detn. of available Al in soil exts. obtained with 0.5N NaOH is based on the reaction between Al and aluminon [569-58-4]. For a single detn. only 90 mL of sample is required. The working capacity is 120 detns. per h. The determinable range was 0-4.0 ppm, with a relative std. deviation of 0.5%. The anal. results agreed well with those obtained manually.