【引用本文】 姜云军, 李星, 姜海伦, 等. 四酸敞口溶解-电感耦合等离子体发射光谱法测定土壤中的硫[J]. 岩矿测试, 2018, 37(2): 152-158. doi: 10.15898/j.cnki.11-2131/td.201704010048
JIANG Yun-jun, LI Xing, JIANG Hai-lun, et al. Determination of Sulfur in Soil by Inductively Coupled Plasma-Optical Emission Spectrometry with Four Acids Open Dissolution[J]. Rock and Mineral Analysis, 2018, 37(2): 152-158. doi: 10.15898/j.cnki.11-2131/td.201704010048

四酸敞口溶解-电感耦合等离子体发射光谱法测定土壤中的硫

1. 

河北省地质实验测试中心, 河北 保定 071051

2. 

中国人民大学环境学院, 北京 100872

收稿日期: 2017-04-10  修回日期: 2017-12-22  接受日期: 2018-03-21

基金项目: 河北省地勘局国土与海洋资源调查项目(201403)

作者简介: 姜云军, 高级工程师, 主要从事光谱分析和样品前处理技术研究。E-mail:jiangyunjun3@sina.com

Determination of Sulfur in Soil by Inductively Coupled Plasma-Optical Emission Spectrometry with Four Acids Open Dissolution

1. 

Hebei Research Center for Geoanalysis, Baoding 071051, China

2. 

School of Environment & Natural Resources, Renmin University of China, Beijing 100872, China

Received Date: 2017-04-10
Revised Date: 2017-12-22
Accepted Date: 2018-03-21

摘要:当前土壤中硫元素的测定方法主要是X射线荧光光谱法和燃烧法,上述两种方法分析速度慢,对高、低含量样品的分析精度较差,难以满足大批量样品快速、准确分析的要求。为提高分析速度和结果的准确度,本文建立了用盐酸-硝酸-氢氟酸-高氯酸(四酸)溶解土壤样品,电感耦合离子体发射光谱法测定硫的方法。通过考察王水消解、王水水浴消解和四酸消解的溶样效果,测定结果表明采用四酸能更好地溶解土壤样品中的硫。方法检出限为10 μg/g,测量范围为33.3~50000 μg/g,相对标准偏差为0.47%~4.05%。本方法简单快速,准确度高,已经过数千件实际样品验证,在不增加分析成本的情况下,一份溶液还可以同时测定钾钠钙镁铁锰铍锂镧铈钪钒钴镍钛等元素,适合在地质行业推广应用。

关键词: 电感耦合等离子体发射光谱法, 土壤, , 敞口酸溶

要点

(1) 土壤样品中的硫能被盐酸-硝酸-氢氟酸-高氯酸充分溶解。

(2) 溶液中的硫和钾、钠、钙、镁等元素可以通过ICP-OES同时测定。

(3) 该方法中,一份溶液可以同时测定15余种元素,分析效率高。

Determination of Sulfur in Soil by Inductively Coupled Plasma-Optical Emission Spectrometry with Four Acids Open Dissolution

KEY WORDS: Inductively Coupled Plasma-Optical Emission Spectrometry, soil, sulfur, open acid dissolution

HIGHLIGHTS

(1) Sulfur in soil samples can be well dissolved by HCl-HNO3-HF-HClO4 acid system.

(2) Sulfur and K, Na, Ca, Mg or other elements in the solution can be simultaneously measured by ICP-OES.

(3) In this method, a solution can simultaneously determine more than 15 kinds of elements with high analytical efficiency.

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四酸敞口溶解-电感耦合等离子体发射光谱法测定土壤中的硫

姜云军, 李星, 姜海伦, 张宁, 韩雪, 朱永晓