Determination of Trace Elements in Agar#br# ———Noncomplete Digestion -Flame Atomic Absorption Spectrometry

Abstract

Abstract:

The noncomplete digestion method was applied to the treatment of agar sample , i .e .the sample was digested in concentrated nitric acid, and then the product of the digested sample was dissolved in emulsifier Triton X -100 obtaining the homog eneous and transparent solution of the sample .Thus the no ncomplete digestion -FAAS method for determination of calcium , magnesium , iron and zinc in agar was established .La3 + w as used as releasing agents for calcium and magnesium to eliminate the interference by co -existing elements in the sample.The results show that the viscosity of test solution is identical to its blank solution .The pretreatment conditions of sample , background absorption interference, the detection limit and characteristic concentration were investigated.The linear ranges of mass concentration are 0 ～ 14 mg/ L for calcium , 0～ 0 .8 mg/ L for magnesium , 0 ～ 7 mg/ L for iron and 0 ～ 1.0 mg/L for zinc .The relative standard deviations of determination are less than 2.2%.The determination results by this method are consistent with those obtained by ashing method.The relative errors are less than ±2 .3 %.I t is concluded that for FAAS determinations , the displacement of ashing method by noncomplete digestion method for the sample pretreatment of agar is possible .

Key words: Flame atomic absorption spectrometry , Noncomplete digestion method , Ag ar , Calcium , Magnesium , Iron , Zinc

摘要： 用非完全消化法处理琼脂样品, 即先用浓硝酸消解样品, 再用乳化剂TritonX -100 溶解消解产物而配制成一均匀透明的样品溶液。建立了非完全消化-火焰原子吸收法测定琼脂中钙、镁、铁、锌的新方法。以La^{3 +}作为钙、镁的释放剂消除样品中共存元素的干扰。试验表明, 试液的粘度与其空白溶液的一致。对样品处理条件、背景吸收干扰、检出限及特征浓度进行了考察。质量浓度的线性范围(mg/ L)为:钙0 ～ 14, 镁0 ～ 0 .8 ,铁0 ～ 7 , 锌0～ 1 。测定结果的相对标准偏差不大于2.2%, 测定结果与灰化法一致, 相对误差小于±2.3%。可见, 在火焰原子吸收光谱法中, 以非完全消化法取代灰化法处理琼脂样品是可行的。

关键词: 火焰原子吸收法, 非完全消化法, 琼脂, 钙, 镁, 铁, 锌

LIU Li-xing,LIU Li -jun. Determination of Trace Elements in Agar#br# ———Noncomplete Digestion -Flame Atomic Absorption Spectrometry[J]. Journal of Liaoning Petrochemical University, 2005, 25(1): 55-57.

刘立行, 刘丽君. 琼脂中微量元素的测定———非完全消化-火焰原子吸收法[J]. 辽宁石油化工大学学报, 2005, 25(1): 55-57.

[1]	Yao WANG, Menghang ZHANG, Wei WANG, Jin WANG. Research on Prediction of Environmental Parameters in the Greenhouse Based on ISSA⁃ELM Model [J]. Journal of Liaoning Petrochemical University, 2024, 44(4): 75-81.
[2]	Lifu WANG, Huijia LU, Hang XU, Pengwei BAO, Yihang WAN, Rui XUN, Zhongxue ZHANG, Lijuan WANG. Synthesis of Lithium Zinc Titanate Anodes by a Sol⁃Gel Method [J]. Journal of Liaoning Petrochemical University, 2024, 44(1): 21-28.
[3]	Jiajun Yu, Shuang Zhao, Xiao Feng. Research Progress of Membrane Separation Technology in Salt Lake Lithium Extraction [J]. Journal of Liaoning Petrochemical University, 2023, 43(4): 30-35.
[4]	Chun Kang, Huiqiang Ma, Shuang Li. Fe⁃Doped g⁃C₃N₄ Photocatalytic Activation of Persulfate for Degradation of Azo Dyes [J]. Journal of Liaoning Petrochemical University, 2022, 42(5): 13-17.
[5]	Yichen Li, Fei Xie, Jian Li, Xiaolong Zhang, Yang Zhao, Yuguo Wu. Study of Corrosion Behavior of X52 Steel in Marine Environment [J]. Journal of Liaoning Petrochemical University, 2022, 42(5): 26-31.
[6]	Yunqi Wang, Shanshan Li, Mengdie Tang, Chuang Liu, Chang Liu, Qi Fu, Zhimeng Wang, Rongxiang Zhao. Synthesis of OA⁃ZnCl₂/SG Catalyst and Its Oxidative Desulfurization Performance [J]. Journal of Liaoning Petrochemical University, 2022, 42(4): 11-16.
[7]	Xiaoxue Mu, Wei Ding, Xiaofan Zhang, Yongchuan Dai, Zhongxing Geng, Yu Li. Preparation and Characterization of Iron Modified MoNi/γ⁃Al₂O₃ Catalysts [J]. Journal of Liaoning Petrochemical University, 2022, 42(4): 6-10.
[8]	Chen Yu, Yang Jiang, Zhao Xiaolong, Li Shengke. Environmental Friendly Oil Sludge Treatment Agent for Petrochemical Wastewater [J]. Journal of Liaoning Petrochemical University, 2020, 40(4): 1-4.
[9]	Sun Cai， Gao Ying， Zhang Jing. Recent Advancement of Iron Oxide Photoelectrocatalytic Materials [J]. Journal of Liaoning Petrochemical University, 2020, 40(2): 30-37.
[10]	Li Zhenya, Liu Zhibo, Yu Fang. Study on the Technology of Diamine Monoprotection [J]. Journal of Liaoning Petrochemical University, 2020, 40(1): 32-34.
[11]	Jia Hongyu， Liu Ningning, Zhang Zhe, Yin Yunzhi. Research Progress of Poly(Lactic Acid) Separation Membrane [J]. Journal of Liaoning Petrochemical University, 2018, 38(1): 1-9.
[12]	Sun Lingling,Fan Xiaojing,Luo Dongmei,Wang Kai,Huo Jianli. Penalty Function and Gauss Newton Fitting for Optimization of Magnesium Ammonium Phosphate Method [J]. Journal of Liaoning Petrochemical University, 2018, 38(06): 26-30.
[13]	Zhang Huan，Li Qingdong. Analysis of the Relationship between Environmental Pollution and Economic Development under the New Normal [J]. Journal of Liaoning Petrochemical University, 2018, 38(05): 89-94.
[14]	Kong Lingsen， Wu Ming， Jia Fengrui， Liu Guangxin， Yang Yujie， Yue Qiang. Optimized Water-Consumption Network in Refinery Enterprises and Its Evaluation Index System [J]. Journal of Liaoning Petrochemical University, 2018, 38(04): 15-20.
[15]	Guan Zongchi, Kang Lei, Wang Haiyan, Zhong Dongkui. Preparation and Reactive Adsorption Desulfurization Performance of ZnO Hollow Microspheres [J]. Journal of Liaoning Petrochemical University, 2018, 38(04): 36-39.

Determination of Trace Elements in Agar#br# ———Noncomplete Digestion -Flame Atomic Absorption Spectrometry

琼脂中微量元素的测定———非完全消化-火焰原子吸收法

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics