食品安全质量检测学报
食品安全質量檢測學報
식품안전질량검측학보
FOOD SAFETY AND QUALITY DETECTION TECHNOLOGY
2015年
2期
695-698
,共4页
于丽%钟钰%孟祥永%张欣媛%张侃
于麗%鐘鈺%孟祥永%張訢媛%張侃
우려%종옥%맹상영%장흔원%장간
不确定度%离子色谱法%香肠%亚硝酸盐
不確定度%離子色譜法%香腸%亞硝痠鹽
불학정도%리자색보법%향장%아초산염
uncertainty%ion chromatography%sausage%nitrites
目的：建立离子色谱法测定香肠中亚硝酸盐的不确定度评定方法，给出不确定度，为简化评定方法和提高检测质量提供依据。方法应用测量不确定度理论，建立检测方法的数学模型，找出影响不确定度的因素并对各个不确定度分量进行评估。结果由各不确定度分量评定结果可以看出香肠中亚硝酸盐的相对扩展不确定度，校准曲线的不确定度分量较大，合成的扩展不确定度为0.26 mg/kg。结论提高校准曲线制作精度是离子色谱法检测香肠中亚硝酸盐的重要质控点，在检测中可以通过设计合理的校准曲线和增加校准曲线的测量次数来减小不确定度带来的影响。通过对香肠中亚硝酸盐含量的测量不确定度的评定，对检测结果可以给出一个正负区间，提供一个准确的检测结果，提高了检测结果的可信度；同时建立了离子色谱定量分析不确定度的通用模式，对检测实验室的不确定度评估起到一定的指导意义。
目的：建立離子色譜法測定香腸中亞硝痠鹽的不確定度評定方法，給齣不確定度，為簡化評定方法和提高檢測質量提供依據。方法應用測量不確定度理論，建立檢測方法的數學模型，找齣影響不確定度的因素併對各箇不確定度分量進行評估。結果由各不確定度分量評定結果可以看齣香腸中亞硝痠鹽的相對擴展不確定度，校準麯線的不確定度分量較大，閤成的擴展不確定度為0.26 mg/kg。結論提高校準麯線製作精度是離子色譜法檢測香腸中亞硝痠鹽的重要質控點，在檢測中可以通過設計閤理的校準麯線和增加校準麯線的測量次數來減小不確定度帶來的影響。通過對香腸中亞硝痠鹽含量的測量不確定度的評定，對檢測結果可以給齣一箇正負區間，提供一箇準確的檢測結果，提高瞭檢測結果的可信度；同時建立瞭離子色譜定量分析不確定度的通用模式，對檢測實驗室的不確定度評估起到一定的指導意義。
목적：건립리자색보법측정향장중아초산염적불학정도평정방법，급출불학정도，위간화평정방법화제고검측질량제공의거。방법응용측량불학정도이론，건립검측방법적수학모형，조출영향불학정도적인소병대각개불학정도분량진행평고。결과유각불학정도분량평정결과가이간출향장중아초산염적상대확전불학정도，교준곡선적불학정도분량교대，합성적확전불학정도위0.26 mg/kg。결론제고교준곡선제작정도시리자색보법검측향장중아초산염적중요질공점，재검측중가이통과설계합리적교준곡선화증가교준곡선적측량차수래감소불학정도대래적영향。통과대향장중아초산염함량적측량불학정도적평정，대검측결과가이급출일개정부구간，제공일개준학적검측결과，제고료검측결과적가신도；동시건립료리자색보정량분석불학정도적통용모식，대검측실험실적불학정도평고기도일정적지도의의。
ABSTRACT:Objective To establish ion chromatography(IC) uncertainty assessment method for determining the concentration of nitrite in sausage and provide the basis for simplification of assessment method and evaluation of detecting results.Methods The calculation formula of the uncertainty was deduced, and factors of uncertainty was analyzed and calculated with uncertainty theory.ResultsNitrite in sausage relative expanded uncertainty by each component of uncertainty evaluation results could be seen, the uncertainty of calibration curve components was larger, Synthesis of expanded uncertainty was 0.26 mg/kg. ConclusionTo improve the manufacturing accuracy was an important quality control point about detection of nitrite in sausage by ion chromatography calibration curve, the effects of uncertainty was reduced by reasonable design of calibration curve and increased the number of calibration curve. Through measuring the content of nitrite in sausage evaluation of uncertainty, the testing results could be given a negative region, and provide an accurate detection results, and improve the reliability of detection; at the same time,a general model of the uncertainty of the quantitative analysis by ion chromatography was established, it had a certain guiding significance in the testing laboratory evaluation of uncertainty.
