食品工程
食品工程
식품공정
FOOD ENGINEERING
2014年
2期
53-54,60
,共3页
许远泉%张玲%钟仕花%张兵
許遠泉%張玲%鐘仕花%張兵
허원천%장령%종사화%장병
高压消解%石墨炉原子吸收光谱%镉%基体改进剂%贝类
高壓消解%石墨爐原子吸收光譜%鎘%基體改進劑%貝類
고압소해%석묵로원자흡수광보%력%기체개진제%패류
high pressure digestion%graphite furnace atomic absorption spectrometry%cadmium%matrix modifier%shellfish
建立了高压消解-石墨炉原子吸收光谱法测定贝类中镉含量的方法，研究对比几种基体改进剂对海水贝肉中镉原子吸光值的影响，优化了程序升温中灰化及原子化温度。实验结果：采用2 g/L 的硝酸钯溶液作为基体改进剂，选择灰化温度650℃，原子化温度1400℃，方法检出限0.091μg/kg，样品加标回收率90.3%~104.0%，相对标准偏差小于3.5%。试验结果表明该方法线性关系好，检出限、准确度和精密度均满足贝类样品的测定要求。
建立瞭高壓消解-石墨爐原子吸收光譜法測定貝類中鎘含量的方法，研究對比幾種基體改進劑對海水貝肉中鎘原子吸光值的影響，優化瞭程序升溫中灰化及原子化溫度。實驗結果：採用2 g/L 的硝痠鈀溶液作為基體改進劑，選擇灰化溫度650℃，原子化溫度1400℃，方法檢齣限0.091μg/kg，樣品加標迴收率90.3%~104.0%，相對標準偏差小于3.5%。試驗結果錶明該方法線性關繫好，檢齣限、準確度和精密度均滿足貝類樣品的測定要求。
건립료고압소해-석묵로원자흡수광보법측정패류중력함량적방법，연구대비궤충기체개진제대해수패육중력원자흡광치적영향，우화료정서승온중회화급원자화온도。실험결과：채용2 g/L 적초산파용액작위기체개진제，선택회화온도650℃，원자화온도1400℃，방법검출한0.091μg/kg，양품가표회수솔90.3%~104.0%，상대표준편차소우3.5%。시험결과표명해방법선성관계호，검출한、준학도화정밀도균만족패류양품적측정요구。
A new method for determining the cadmium content in seawater shellfish with high pressure digestion and graphite furnace atomic absorption spectrometry was established. The effect of several matrix modifiers on the light absorption value of cadmium atoms in seawater shellfish were studied. The ashing temperature and atomization temperature were optimized. The results showed, when 2 g/L of palladium nitrate solution was as matrix modifier, ashing temperature was 650 ℃, determination of atomization temperature was 1 400 ℃, the detection limit was 0.091 μg/kg, the rate of recovery was 90.3%~ 104%, the relative standard deviation was less than 3.5%. This method can meet the determination of seawater shellfish samples with good linear relationship, detection limit, accuracy and precision.
