化学分析计量
化學分析計量
화학분석계량
CHEMICAL ANALYSIS AND METERAGE
2014年
6期
59-61
,共3页
微波消解%石墨炉原子吸收法%药食两用%中药材%铅
微波消解%石墨爐原子吸收法%藥食兩用%中藥材%鉛
미파소해%석묵로원자흡수법%약식량용%중약재%연
microwave digestion%GFAAS%medicine and food dual purpose%traditional chinese medicine%lead
建立测定药食两用中药材中铅含量的微波消解–石墨炉原子吸收光谱分析方法。样品经微波消解后，以2%磷酸二氢铵为基体改进剂，用石墨炉原子吸收法测定药食两用中药材中的铅含量。在2～40μg／L 范围内，铅的质量浓度与吸光度呈良好的线性关系，线性相关系数 r 大于0.999，检出限为5μg／kg。加标回收率为94.0%～105.5%，测定结果的相对标准偏差小于5.0%(n=6)。该方法操作简便快速，准确度较高，基体干扰小，适合药食两用中药材中铅的检测。
建立測定藥食兩用中藥材中鉛含量的微波消解–石墨爐原子吸收光譜分析方法。樣品經微波消解後，以2%燐痠二氫銨為基體改進劑，用石墨爐原子吸收法測定藥食兩用中藥材中的鉛含量。在2～40μg／L 範圍內，鉛的質量濃度與吸光度呈良好的線性關繫，線性相關繫數 r 大于0.999，檢齣限為5μg／kg。加標迴收率為94.0%～105.5%，測定結果的相對標準偏差小于5.0%(n=6)。該方法操作簡便快速，準確度較高，基體榦擾小，適閤藥食兩用中藥材中鉛的檢測。
건립측정약식량용중약재중연함량적미파소해–석묵로원자흡수광보분석방법。양품경미파소해후，이2%린산이경안위기체개진제，용석묵로원자흡수법측정약식량용중약재중적연함량。재2～40μg／L 범위내，연적질량농도여흡광도정량호적선성관계，선성상관계수 r 대우0.999，검출한위5μg／kg。가표회수솔위94.0%～105.5%，측정결과적상대표준편차소우5.0%(n=6)。해방법조작간편쾌속，준학도교고，기체간우소，괄합약식량용중약재중연적검측。
A method for determination of lead in medicine and food dual purpose traditional Chinese medicine by GFAAS with microwave digestion was established. After digested by microwave,the sample was analyzed by graphite furnace atomic absorption spectrometry using 2% NH4H2PO4 as matrix modifier. The linear range of the method was 2–40 μg/L,the concentration and absorbance of lead had good liner relationship with the correlation coefficients greater than 0.999,and the detection limit was 5 μg/kg. The recoveries were 94.0%–105.5%,and the relative standard deviations of determination results were less than 5.0%(n=6). This method is simple,rapid,accurate,less matrix interference,and it is suitable for the determination of lead in medicine and food dual purpose traditional chinese medicine.
