痕量锰在人体生化过程中,为葡萄糖与类脂化合物代谢作用所必需;然而过量摄入锰可能对人体有害。据报导锰能干扰铁的吸收,降低人体血清的镁含量,而且还能干扰钙和磷的代谢。因此研究饮水中超痕量锰的测定不仅对于探讨和扩充分析方法很有意义,同时对于环境化学和卫生保健亦属必要。海水、天然水和饮水中锰含量低至ppb级,难以引用普通的化学法从事分析。目前国内外盛行的高温石墨炉原子吸收技术有很高的灵敏度,用于水体中某些痕迹量金属的测定非常有效。石墨炉法测定水体中锰国外已有报导;但一般需经萃取预分离手续,或借助于标准加入法来消除基体干扰。同时由于进样量、进样位置的不重视及样品在石墨管内的渗透与 Trace amounts of manganese are necessary for the metabolism of glucose and lipid compounds during the biochemical process in humans; however, excessive intake of manganese may be harmful to the human body. It has been reported that manganese interferes with the absorption of iron, reduces the magnesium content of human serum, and also interferes with the metabolism of calcium and phosphorus. Therefore, the determination of ultra-trace manganese in drinking water is not only meaningful for the exploration and expansion of analytical methods, but also for environmental chemistry and health care. Sea water, natural water and drinking water manganese content as low as ppb level, it is difficult to use ordinary chemical analysis. At present, the high-temperature graphite furnace atomic absorption technique prevailing at home and abroad has high sensitivity and is very effective for the determination of some trace metals in water. Graphite furnace method for the determination of manganese in water abroad has been reported; but generally require pre-separation by extraction procedures, or by means of standard addition method to eliminate matrix interference. At the same time due to the injection volume, the injection position is not valued and the sample in the graphite tube penetration and