1 Type of sample The method is applicable to the analysis of potable waters, ground waters, and lightly polluted surface and sea waters. 2 Substance determined The method determines filterable (dissolved) and acid-soluble aluminium. 3 Range The method includes low range determination up to 100 μg/l Al with 50 mm cells and high range determi-nation up to 500 μg/l Al with 10 mm cells. The effec-tive range depends on the sensitivity of the spectrometer and can be extended upwards by taking smaller test portions. 4 Limit of detection The limit of detection is 2 μg/l when cells of optical path length 50 mm and a 25 ml test portion are used. 5 Sensitivity An aluminium concentration of 100 μg/l gives an absorbance of about 0,20 ± 0,05 optical absorption units, using a 25 ml test portion and cells of optical path length 10 mm. 6 Precision If not specified, the precision of volumes and masses mentioned in this International Standard is ± 1 % of the value.
BS 6068-2.49-1995由英国标准学会 GB-BSI 发布于 1995-07-15,并于 1995-07-15 实施。
BS 6068-2.49-1995 在中国标准分类中归属于: Z16 水环境有毒害物质分析方法,在国际标准分类中归属于: 13.060.50 水的化学物质检验。
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