广东化工
廣東化工
엄동화공
GUANGDONG CHEMICAL INDUSTRY
2012年
3期
163-164
,共2页
石墨炉原子吸收光谱法%柑橘%铅%湿法消化%干法灰化
石墨爐原子吸收光譜法%柑橘%鉛%濕法消化%榦法灰化
석묵로원자흡수광보법%감귤%연%습법소화%간법회화
graphite furnace atomic absorption spectrometry（GF-AAS）： citrus fruit： lead： wet digestion： dry ashing
采用加入基体改进剂-石墨炉原予吸收光谱法测定柑橘皮样品中的痕量铅。应用塞曼效应消除背景干扰，以20g／L的磷酸二氢铵（NIGH2P04）为基体改进剂，灰化温度为500℃，原子化温度为1900℃。试样消解分别采用了湿法消化法和下法灰化法。铅的质鬣浓度在0-110μg/L范围内与其吸光度呈线性关系，湿法消化法和干法灰化法的检出限（3s）分别为12．26μg／kg和3．803μ／kg。应用此建立的石墨炉原予吸收光谱法分析了几种柑橘皮试样中铅，方法快速简便、结果比较准确。
採用加入基體改進劑-石墨爐原予吸收光譜法測定柑橘皮樣品中的痕量鉛。應用塞曼效應消除揹景榦擾，以20g／L的燐痠二氫銨（NIGH2P04）為基體改進劑，灰化溫度為500℃，原子化溫度為1900℃。試樣消解分彆採用瞭濕法消化法和下法灰化法。鉛的質鬣濃度在0-110μg/L範圍內與其吸光度呈線性關繫，濕法消化法和榦法灰化法的檢齣限（3s）分彆為12．26μg／kg和3．803μ／kg。應用此建立的石墨爐原予吸收光譜法分析瞭幾種柑橘皮試樣中鉛，方法快速簡便、結果比較準確。
채용가입기체개진제-석묵로원여흡수광보법측정감귤피양품중적흔량연。응용새만효응소제배경간우，이20g／L적린산이경안（NIGH2P04）위기체개진제，회화온도위500℃，원자화온도위1900℃。시양소해분별채용료습법소화법화하법회화법。연적질렵농도재0-110μg/L범위내여기흡광도정선성관계，습법소화법화간법회화법적검출한（3s）분별위12．26μg／kg화3．803μ／kg。응용차건립적석묵로원여흡수광보법분석료궤충감귤피시양중연，방법쾌속간편、결과비교준학。
The determination of trace lead in citrus fruits was established by matrix modifier-graphite furnace atomic absorption spectrometry. The Zeeman correction was used to avoid the interfere of background, 20 g/L NH4H2PO4 was used as matrix modifier, and temperatures for ashing and atomization were 500℃ and 1900℃. The wet digestion and dry ashing method were used to handle samples. Linear relationship between values of absorbance and mass concentration of Pb was obtained in the range of 0-110 μg/L. The wet digestion and dry ashing method detection limits （3 s） respectively was 12.26μg/kg and 3.803/ag/kg. The proposed method was used in the analysis of several citrus peels. The method is rapid and accurate.
