Determination of Nine Mineral Elements in Hulless Barley by Ultraviolet Spectrophotometry and Flame Atomic Absorption Spectrometry

NWIPB OpenIR

	Determination of Nine Mineral Elements in Hulless Barley by Ultraviolet Spectrophotometry and Flame Atomic Absorption Spectrometry
	Liu Jin 1,2; Zhang Huai-gang 1
	2010-04-01
发表期刊	SPECTROSCOPY AND SPECTRAL ANALYSIS
ISSN	1000-0593
卷号	30 期号:4 页码:1126-1129
文章类型	Article
摘要	The contents of nine mineral elements, including sulphur, zinc, calcium, magnesium, potassium, sodium, iron, copper and manganese in five hulless barley (Hordeum vulgare L. var. nudum Hook. f.) lines were determined by ultraviolet spectrophotometry and flames atomic absorption spectrometry (FAAS). For the determination of sulphur, the samples were dissolved by magnesia and anhydrous sodium carbonate at 250 degrees C for 0. 5 h and at 550 degrees C for 3 h in the muffle furnace, and then a certain amount of barium chloride was put into the sample solution for colorimetry of the UV-Vs spectrophotometer. For the determination of other eight mineral elements, all of the samples were dissolved by a kind of incinerating method: first, the sample was put into the muffle furnace at 250 degrees C for 0. 5 h and at 550 degrees C for 2. 5 h, then two droplets of 50%HNO(3) were distributed into each sample, and the last step was putting the sample into the muffle furnace at 550 degrees C for 0. 5 h. And then all of the ash was dissolved by 50%HNO(4) to 50 milliliter and determined by flames atomic absorption spectrometry. The precision, accuracy, repeatability and stability of the method were discussed too. The results showed that the relative standard deviations (RSD) were between 1. 2% and 3. 7%; The average recoveries were 97. 44%-101. 52% and the relative standard deviations (RSD) of sample determination were 1. 3%-3. 8%. The repeatability experiment showed that the relative standard deviations (RSD) were 2. 6%-6. 1%. And the content of each mineral element was the same after 24 hours; All these showed that the method has a good precision, accuracy, repeatability and stability. In all the hulless barley samples, the average contents were in the order of K>S>Mg >Ca>Fe>Na>Zn>Mn>Cu, and the contents of zinc, iron and manganese closely related to people's health were relatively higher than other crops. The data of the experiment could provide an accurate and credible evidence for the deeper exploitation of the hulless barley.; The contents of nine mineral elements, including sulphur, zinc, calcium, magnesium, potassium, sodium, iron, copper and manganese in five hulless barley (Hordeum vulgare L. var. nudum Hook. f.) lines were determined by ultraviolet spectrophotometry and flames atomic absorption spectrometry (FAAS). For the determination of sulphur, the samples were dissolved by magnesia and anhydrous sodium carbonate at 250 degrees C for 0. 5 h and at 550 degrees C for 3 h in the muffle furnace, and then a certain amount of barium chloride was put into the sample solution for colorimetry of the UV-Vs spectrophotometer. For the determination of other eight mineral elements, all of the samples were dissolved by a kind of incinerating method: first, the sample was put into the muffle furnace at 250 degrees C for 0. 5 h and at 550 degrees C for 2. 5 h, then two droplets of 50%HNO(3) were distributed into each sample, and the last step was putting the sample into the muffle furnace at 550 degrees C for 0. 5 h. And then all of the ash was dissolved by 50%HNO(4) to 50 milliliter and determined by flames atomic absorption spectrometry. The precision, accuracy, repeatability and stability of the method were discussed too. The results showed that the relative standard deviations (RSD) were between 1. 2% and 3. 7%; The average recoveries were 97. 44%-101. 52% and the relative standard deviations (RSD) of sample determination were 1. 3%-3. 8%. The repeatability experiment showed that the relative standard deviations (RSD) were 2. 6%-6. 1%. And the content of each mineral element was the same after 24 hours; All these showed that the method has a good precision, accuracy, repeatability and stability. In all the hulless barley samples, the average contents were in the order of K>S>Mg >Ca>Fe>Na>Zn>Mn>Cu, and the contents of zinc, iron and manganese closely related to people's health were relatively higher than other crops. The data of the experiment could provide an accurate and credible evidence for the deeper exploitation of the hulless barley.
关键词	Ultraviolet Spectrophotometry Flames Atomic Absorption Spectrometry (Faas) Hullessbarley Mineral Elements Content
WOS标题词	Science & Technology ; Technology
关键词[WOS]	FOOD SAMPLES ; DURUM-WHEAT ; FLOUR
收录类别	SCI
语种	英语
WOS研究方向	Spectroscopy
WOS类目	Spectroscopy
WOS记录号	WOS:000276506100059
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/1730
专题	中国科学院西北高原生物研究所
作者单位	1.Chinese Acad Sci, NW Inst Plateau Biol, Xining 810001, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liu Jin,Zhang Huai-gang. Determination of Nine Mineral Elements in Hulless Barley by Ultraviolet Spectrophotometry and Flame Atomic Absorption Spectrometry[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2010,30(4):1126-1129.
APA	Liu Jin,&Zhang Huai-gang.(2010).Determination of Nine Mineral Elements in Hulless Barley by Ultraviolet Spectrophotometry and Flame Atomic Absorption Spectrometry.SPECTROSCOPY AND SPECTRAL ANALYSIS,30(4),1126-1129.
MLA	Liu Jin,et al."Determination of Nine Mineral Elements in Hulless Barley by Ultraviolet Spectrophotometry and Flame Atomic Absorption Spectrometry".SPECTROSCOPY AND SPECTRAL ANALYSIS 30.4(2010):1126-1129.