硫化氢存在于深部还原环境的水源中,天然水一般含硫化氢较少,在酸性水中(PH<7),硫化氢以溶解气体形式存在于水中。某些热矿泉,卤水及油田水中有时合量较高。目前不少地震测氮泉点均含有高低不等的硫化氢,由于硫化氢是一种特有臭鸡蛋的毒性气体,其还原性能强,是强还原剂,因此长期进行水氮观测时,使FD—105静电仪的电离室金属部件将受到强腐蚀作用,发生的化学反 Hydrogen sulfide exists in a source of deep reduction environment. Natural water generally contains less hydrogen sulfide. In acidic water (pH <7), hydrogen sulfide exists in water as a dissolved gas. Some hot springs, brine and oilfield water sometimes higher. At present, many seismological nitrogen measurement points contain different levels of hydrogen sulfide. Since hydrogen sulfide is a poisonous gas with a particularly rotten egg, its reduction performance is strong and it is a strong reducing agent. Therefore, for long-term water and nitrogen observations, FD -105 Electrostatic cell ionization chamber metal parts will be strongly corrosive effect, the chemical reaction occurred