摘要
选取不同沉积类型海洋沉积物通过3步洗盐法和连续洗盐法进行探索实验。结果表明,3步洗盐法不适用于海洋沉积物洗盐,原因在于第2步洗盐时上清液出现水溶胶,而胶体中元素在总沉积物中占一定比例。若弃去胶体,势必会对后续测定工作产生负误差。分析3步洗盐上清液中Na的质量分数,表明一步洗盐便可达到洗盐要求,且最佳浸泡洗盐时间为30h。
An exploratory experiment was made of different types of marine sediments by means of three- steps salt washing and continuous salt washing. The results indicate that the method of the three-steps salt washing does not hold for marine sediments, because hydrosol occurs in the supernatant at the second step of the three-steps salt washing, and the chemical elements in the hydrosol make up a certain proportion of the total in the sediments. If the hydrosol is removed, a negative deviation could be produced for the next work. The analysis of the Na content in the supernatant left after the three-steps salt washing has shown that one-step salt washing can meet the requirements of salt washing for marine sediments, and the best immersion time for salt washing is about 30 hours.
出处
《海洋科学进展》
CAS
CSCD
北大核心
2012年第3期423-431,共9页
Advances in Marine Science
基金
国家自然科学基金项目--太平洋富钴铁锰结壳铂族赋存状态及其富集机制研究(40976038)
国家海洋局第一海洋研究所基本科研业务费专项资金项目--黄河尾闾摆动在现代黄河水下三角洲的沉积记录(GY02-2009G22)
