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在ｐＨ９．５的ＮＨ４Ｃｌ－ＮＨ３·Ｈ２Ｏ介质和表面活性剂ＣＰＣ及ＯＰ存在下，锰和５－Ｂｒ－ＰＡＮ－６Ｓ形成１∶２的紫红色配合物．其最大吸收波长在５９０ｎｍ处，表观摩尔吸光系数为２．１８×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，以半胱氨酸和氟化铵作掩蔽剂，直接测定茶汤中痕量锰．结果满意．
Manganese and 5-Br-PAN-6S formed a purple-red complex of 1: 2 in the presence of NH4Cl-NH3. H2O at pH 9.5 and surfactants CPC and OP. The maximum absorption wavelength at 590nm, the apparent molar absorptivity of 2.18 × 105L · mol-1 · cm-1, with cysteine and ammonium fluoride as masking agent, direct determination of trace manganese in tea. Satisfactory results.