JIS K 0400-66-10:1998 Water quality -- Determination of total mercury by flameless atomic absorption spectrometry -- Part 1: Method after digestion with permanganate-peroxodisulfate
This standard specifies the determination of total mercury in water, particularly surface waters, domestic and industrial wastewater, by flameless atomic absorption spectrometry. Under optimal conditions (minimum baseline noise, lamps with high spectral purity, and reagents with very low mercury content), approximately 0.05 μg of mercury can be determined in the sample. For example, when using 100 ml of measurement sample, the lower limit of quantification is 0.5 μg/l. This method cannot be applied to samples containing so much organic matter that the reddish-purple color of potassium permanganate cannot be sustained by the procedure described in 7.3.1. moreover. The presence of iodide ions considerably reduces the analytical accuracy of this method (see point 9).
JIS K 0400-66-10:1998 history
1998JIS K 0400-66-10:1998 Water quality -- Determination of total mercury by flameless atomic absorption spectrometry -- Part 1: Method after digestion with permanganate-peroxodisulfate