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1·The assay is based upon formation of a complex between Xylenol Orange and ferric iron, which is produced by the peroxide dependent oxidation of ferrous iron.

检测方法基于二甲酚橙和三价铁形成的复合物显色反应，而三价铁由过氧化物氧化二价铁得到。

2·The flux of water was proportional to the operation pressure, and the rejection of inorganic salts and xylenol orange increased with increasing the operation pressure.

对盐和二甲酚橙的截留率随压力的升高都上升，但上升速度会逐渐减慢。

3·The formation of the complex between lead ion and immobilized xylenol orange caused a large reflected light intensity change, and lead ion in the solution can be determinated.

铅离子与固定在阴离子交换树脂上的二甲酚橙的络合反应，使试剂相光反射强度发生了很大的变化，从而使溶液中的铅离子得以测定。

4·With xylenol orange as developer and model 721 spectrophotometer, it is simple and easy to measure human serum zinc concentration, which is suitable for hospital laboratories.

用二甲酚橙作显色剂、72型分光光度计进行血清锌检测，方法简便，适合医院化验室使用。

5·The low concentration of chlorine dioxide in water can be determined by spectrophotometry based on the chlorine dioxide can decolor and oxidize xylenol orange and chlorophenol red.

根据二氧化氯可氧化二甲酚橙、氯酚红使其褪色的特性，可用示差分光光度法测定水中低浓度二氧化氯的含量。