CAJ | 학술논문

应用石墨炉原子吸收光谱法测定了薏苡仁、白菜及蓝莓中铊的含量。称取样品（5.00 g），加入硝酸-高氯酸（4+1）混合酸20 mL进行湿法消解。采用灰化温度为700℃，原子化温度为1700℃，铊的质量浓度在0μg/L~80μg/L范围内与其吸光度呈良好的线性关系，相关系数为0.9998，检出限（3s/k）为2.98μg/kg。方法用于芹菜、大葱、菠菜等标准物质的分析，测定结果与标准值一致，相对标准偏差（n=7）在1.38%～4.71%之间。
응용석묵로원자흡수광보법측정료의이인、백채급람매중사적함량。칭취양품（5.00 g），가입초산-고록산（4+1）혼합산20 mL진행습법소해。채용회화온도위700℃，원자화온도위1700℃，사적질량농도재0μg/L~80μg/L범위내여기흡광도정량호적선성관계，상관계수위0.9998，검출한（3s/k）위2.98μg/kg。방법용우근채、대총、파채등표준물질적분석，측정결과여표준치일치，상대표준편차（n=7）재1.38%～4.71%지간。
Determination of thallium in coix seed and cabbage and blueberry by GFAAS. The sample (5.00g) was taken and dissolved with a mixture of HNO3 and HCLO4 (4+1) 20 mL by wet digestion. The ashing temperature and atomization temperature were set at 700 ℃ and 1 700 ℃ respectively. Linear relationship between values of absorbance and mass concentration of thallium was obtained in the range of 0μg/L~80μg/L, with correlation coefficient of 0.999 8, detection limit (3 s/k) of 2.98μg/kg. The proposed method was applied to analysis of standard substance of celery and scallion and spinach , giving results in consistency with their certified values. Values of RSD's (n=7) found were kept in the range of 1.38%-4.71%.