CAJ | 학술논문

本实验采用湿法消化法，原子吸收光谱法测定油茶籽油中钙、铜、锌金属元素的含量，并分别对其标准储备液稀释过程引入的不确定度，样品制备过程中产生的不确定度，样品测量过程，三个主要方面进行不确定度分量的计算，最后整体合成相对标准不确定度。当油茶籽油中钙含量为52.40mg/kg时，测量结果的不确定度为0.71mg/kg；当油茶籽油中铜含量为1.320mg/kg时，测定结果的不确定度为0.026mg/kg；当油茶籽油中锌含量为37.02mg/kg时，测定结果的不确定度为0.53mg/kg。其中最小二乘法拟合校准曲线和重复性引入的不确定度是不确定度的主要来源。本法过程直观，数理清晰，适用于实验室日常工作中原子吸收测定金属元素的不确定度评定。
본실험채용습법소화법，원자흡수광보법측정유다자유중개、동、자금속원소적함량，병분별대기표준저비액희석과정인입적불학정도，양품제비과정중산생적불학정도，양품측량과정，삼개주요방면진행불학정도분량적계산，최후정체합성상대표준불학정도。당유다자유중개함량위52.40mg/kg시，측량결과적불학정도위0.71mg/kg；당유다자유중동함량위1.320mg/kg시，측정결과적불학정도위0.026mg/kg；당유다자유중자함량위37.02mg/kg시，측정결과적불학정도위0.53mg/kg。기중최소이승법의합교준곡선화중복성인입적불학정도시불학정도적주요래원。본법과정직관，수리청석，괄용우실험실일상공작중원자흡수측정금속원소적불학정도평정。
This experiment adopt the wet digestion process and determination of calcium, copper, zinc metal elements in oil-tea camellia see d oil by atomic absorption spectrometry, and calculate three main aspects of uncertainty:the uncertainty of dilution standard stock solution,the uncertainty of the sample preparation process resulting, the uncertainty of sample measurement process, Finally calculate the overall synthesis of relative standard uncertainty. When the calcium content in rapeseed oil is 52.40mg/kg, the uncertainty of measurement result is 0.71mg/kg; when the copper content in rapeseed oil is 1.320mg/kg, the uncertainty of measurement result is 00.026mg/kg; when the zinc content in rapeseed oil is 37.02mg/kg, the uncertainty of measurement result is 0.53mg/kg. The least square method to fit the calibration curve and the repeatability of uncertainty is the main source of uncertainty. This method is directly, mathematical clarity, suitable for routine laboratory atomic absorption determination of metal elements in the evaluation of uncertainty.