ISO 9965:1993 水质.硒的测定.原子吸收光谱法（氢化物技术）

标准编号：ISO 9965:1993

中文名称：水质.硒的测定.原子吸收光谱法（氢化物技术）

英文名称：Water quality — Determination of selenium — Atomic absorption spectrometric method (hydride technique)

发布日期：1993-07

标准范围

在规定的方法条件下（原子吸收光谱法中氢化硒的热分解），只有硒（IV）被定量转化为氢化物。为避免测定误差，在测定之前，需要将其他氧化态转换为Se（IV）。在196,0 nm波长下测量吸光度。该方法测定饮用水、地下水和地表水中的硒和有机结合的硒，浓度范围为1μg/l和10μg/l。可通过适当稀释水样来测定更高的浓度。

Under the conditions of the method specified (thermal decomposition of selenium hydride for AAS), only Se(IV) is quantitatively converted to the hydride. To avoid errors in determination, other oxidation states need to be converted to Se(IV) prior to the determination. The absorbance is measured at a wavelength of 196,0 nm. The method determines selenium and organically bonded selenium in drinking waters, ground waters and surface waters, in a concentration range of 1 μg/l and 10 μg/l. Higher concentrations can be determined by a suitable dilution of the water sample.

标准预览图