[1]董炎青,陈 英,陈 勇,等.重铬酸钾-烘箱加热法测定土壤有机碳研究[J].常州大学学报(自然科学版),2019,31(01):15-20.[doi:10.3969/j.issn.2095-0411.2019.01.003]
 DONG Yanqing,CHEN Ying,CHEN Yong,et al.Study on the Determination of Soil Organic Carbon by Potassium Dichromate-Dryer Heating Method[J].Journal of Changzhou University(Natural Science Edition),2019,31(01):15-20.[doi:10.3969/j.issn.2095-0411.2019.01.003]
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重铬酸钾-烘箱加热法测定土壤有机碳研究()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
第31卷
期数:
2019年01期
页码:
15-20
栏目:
环境科学与工程
出版日期:
2019-01-28

文章信息/Info

Title:
Study on the Determination of Soil Organic Carbon by Potassium Dichromate-Dryer Heating Method
文章编号:
2095-0411(2019)01-0015-06
作者:
董炎青12陈 英2陈 勇2陈 东2
(1.常州大学 石油工程学院,江苏 常州 213016; 2.浙江海洋大学 石化与能源工程学院,浙江 舟山 316022)
Author(s):
DONG Yanqing12 CHEN Ying2 CHEN Yong2 CHEN Dong2
(1. School of Petroleum Engineering, Changzhou University, Changzhou 213016, China; 2. School of Petrochemical and Energetic Engineering, Zhejiang Ocean University, Zhoushan 316022, China)
关键词:
土壤 有机碳 油浴 烘箱加热 重铬酸钾氧化法
Keywords:
soil organic carbon oil bath heating oven air heating potassium dichromate method
分类号:
X 82
DOI:
10.3969/j.issn.2095-0411.2019.01.003
摘要:
重铬酸钾氧化法测定土壤有机质含量(HJ615—2011)时利用油浴加热消解有机物,本文针对油浴加热具有易发生溢油以及附着在消解管壁上的油污难以清洗等缺点,研究了在烘箱常用温度下用烘箱加热代替油浴加热的可能性。研究结果表明,135 ℃下(该温度在烘箱常用温度范围内,且与HJ615—2011中的油浴加热温度一致)利用烘箱加热时重铬酸钾氧化法的相对标准偏差为0.294%~1.593%,加标回收率为99%~103%,而用油浴加热时的相对标准偏差为0.386%~1.945%,加标回收率为96%~105%,使用烘箱加热提高了重铬酸钾氧化法的精确度和准确度,在HJ615—2011土壤有机碳测定方法中,采用烘箱加热较传统的油浴加热测定有机碳更适宜。
Abstract:
Determination of soil organic matter by oxidation of potassium dichromate(HJ615—2011)uses oil bath heating to digest organic matter. Since the oil bath heating is prone to oil spillage and the oil stain attached to the wall of pipe is difficult to clean, this paper focuses on the possibility of using dryer heating instead of the oil bath heating at the common temperature of dryer. The results of the study show that, at the temperature of 135 ℃(the temperature is in the dryer common temperature range, and coincided with the temperature of oil bath in HJ615-2011)the relative standard deviation(RSD)of potassium dichromate oxidation method is 0.294%-1.593%, the recovery rate is 99%-103% by dryer heating, compared with the result that the RSD is 0.386%-1.945% and the recovery is 96%-105% by oil bath heating. Therefore, the precision and accuracy of the oxidation of potassium dichromate is improved by using dryer heating, and the dryerheating method is more appropriate to determine organic carbon than traditional oil bath heating method.

参考文献/References:


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备注/Memo

备注/Memo:
收稿日期:2018-10-16。
基金项目:浙江省科技计划项目(2016C33031); 舟山市科技计划项目(2015C41017); 2014年浙江省舟山市科技计划项目(2017C41019)。
作者简介:董炎青(1993-),女,浙江嘉兴人,硕士生。通信联系人:陈英(1967—),E-mail:chenying9468@126.com
更新日期/Last Update: 2019-02-20