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《Journal of Public Health and Preventive Medicine》 2018-03
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Determination of Calcium and Magnesium insoybean milk for different water ratio by Atomic Absorption Spectrometry(AAS)

WU Lifang;ZHAO Zhi;WANG Ziping;CHENG Jing;YANG Gang;CAI Xiuli;XIAO Yao;RONG Shuang;Department of Nutrition and Food Hygiene,School of Public Health,Medical College,Wuhan University of Science of Technology;Hubei Province Key Laboratory of Occupational Hazard Identification and Control,Wuhan University of Science and Technology;  
Objective To establish a simple and rapid method for the determination of calcium and magnesium in soybean milk with different water ratio. Methods Atomic absorption spectrometry was used to simultaneously determine calcium and magnesium in different ratio of soy/water to soybean milk,the sample pretreatment conditions was optimized. The linearity,precision,stability,sensitivity,detection limit,and recovery of spiked samples were investigated. Results It showed that HCl O4∶ HNO3 was 1 ∶ 4,the volume and time were 15 mL and 40 min,respectively. The detection limit of Calcium and Magnesium were 0. 122μg/mL and 0. 010μg/mL,respectively,the standard recovery rates were 109. 20% and 107. 70%,respectively. Conclusion The method is simple,rapid,sensitive,and accurate,and can meet the laboratory's simultaneous determination of calcium and magnesium in soymilk samples.
【Fund】: 中国营养学会营养科研基金——伊利营养与健康研究基金(2014-38)
【CateGory Index】: R155.5
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