摘要
通过灰化、氧化和萃取三步从干海带中提取出了碘。采用紫外可见分光光度法测定了碘在氯仿中的吸收光谱,碘在氯仿中的最大吸收波长为511 nm,用吸收光谱测定了海带中碘的含量,标准曲线回归方程为Abs=0.00214c+0.00286,相关系数R=0.9998,回收率大于97%。结果显示,该方法可以准确的测出海带中碘的含量,海带上半部分含碘量为0.0316%,下半部分海带中碘含量为0.022%,上半部分碘的含量高于下半部分。
The iodine in kelp was extracted through ashing, oxidation and extraction. The absorption spectrum of iodine was determined in chloroform by ultraviolet-visible spectrophotometry. The maximum absorption wavelength of iodine was 511 nm. The iodine content in kelp was determined by uhraviolet-visible spectrophotometry. The standard curve regression equation was Abs = 0. 00214c＋0. 00286, R = 0. 9998. The recovery rate was greater than 97%. The results showed that the spectrophotometry was an accurate determination method of iodine content. The iodine content was0. 0316% and 0. 022% in the upper part and lower part of kelp, respectively. The iodine content in upper part of kelp was greater than the iodine content in lower part.
作者
张怀斌
万君
柴勇
王爱玲
张萧丹
ZHANG Huai-bin WAN Jun CHAI Yong WANG Ai-ling ZHANG Xiao-dan(School of Pharmacy, Binzhou Medical University, Shandong Yantai 264003 School of Clinical Medicine, Binzhou Medical University, Shandong Yantai 264003 Yantai Affiliated Hospital, Binzhou Medical University, Shandong Yantai 264100 China)
出处
《广州化工》
CAS
2017年第15期120-121,156,共3页
GuangZhou Chemical Industry
基金
山东省自然科学基金资助项目(ZR2016HL41)
山东省医药卫生科技计划资助项目(2015WS0495)
山东省高等学校科技计划资助项目(J12LD550)
滨州医学院大学生科技创新项目(BY2016DKCX028)
关键词
海带
碘
分光光度法
萃取
kelp
iodine
spectrophotometry
extraction
