The paper indicated that dilution rate,acidity and salinity had a great influence on the determination of sulphate in water samples.Optimum condition could make the result more stable and believable.

• 用铬酸钡间接原子吸收法测定水中的硫酸盐,发现稀释倍数、盐度、酸度等对其影响特别大,通过试验比较,总结出应对措施,解决了测定结果的稳定度和可靠性。