中国钨业
中國鎢業
중국오업
CHINA TUNGSTEN INDUSTRY
2015年
4期
73-76
,共4页
钨精矿%磷%分光光度法%不确定度
鎢精礦%燐%分光光度法%不確定度
오정광%린%분광광도법%불학정도
tungsten concentrates%phosphorus%spectrophotometry%uncertainty
检测数据的不确定度评估是当前实验室必须努力完善的基础工作，采用磷钼黄分光光度法测定了钨精矿中磷含量的不确定度进行分析评定，分析了测量样本中不确定度的主要来源，对检测过程中的样品称重、试液体积、标准溶液、曲线拟合、重复测量、分析仪器各环节的不确定度分量进行了计算，最终给出钨精矿中磷含量的合成标准不确定度及扩展不确定度，得出了磷钼黄分光光度法测定钨精矿中磷量的测量不确定度的结果。研究表明：所测试钨精矿样品中磷含量的检测结果为0.075%，扩展不确定度为0.002%（包含因子k=2），为实验室质量控制提供参考依据。
檢測數據的不確定度評估是噹前實驗室必鬚努力完善的基礎工作，採用燐鉬黃分光光度法測定瞭鎢精礦中燐含量的不確定度進行分析評定，分析瞭測量樣本中不確定度的主要來源，對檢測過程中的樣品稱重、試液體積、標準溶液、麯線擬閤、重複測量、分析儀器各環節的不確定度分量進行瞭計算，最終給齣鎢精礦中燐含量的閤成標準不確定度及擴展不確定度，得齣瞭燐鉬黃分光光度法測定鎢精礦中燐量的測量不確定度的結果。研究錶明：所測試鎢精礦樣品中燐含量的檢測結果為0.075%，擴展不確定度為0.002%（包含因子k=2），為實驗室質量控製提供參攷依據。
검측수거적불학정도평고시당전실험실필수노력완선적기출공작，채용린목황분광광도법측정료오정광중린함량적불학정도진행분석평정，분석료측량양본중불학정도적주요래원，대검측과정중적양품칭중、시액체적、표준용액、곡선의합、중복측량、분석의기각배절적불학정도분량진행료계산，최종급출오정광중린함량적합성표준불학정도급확전불학정도，득출료린목황분광광도법측정오정광중린량적측량불학정도적결과。연구표명：소측시오정광양품중린함량적검측결과위0.075%，확전불학정도위0.002%（포함인자k=2），위실험실질량공제제공삼고의거。
The measurement uncertainty for the determination of phosphorus content in tungsten concentrates by phosphorus molybdenum yellow ectrophotometry was analyzed and evaluated. The main sources of uncertainty were analyzed and determined, such as sample weighing, constant volume, standard solution, linear fitting, test repeatability and analytical instrument. The uncertainty components of the measurement results were calculated by determining the combined standard uncertainty and expanded uncertainty. It was concluded that the uncertainty was most influenced by test repeatability. The measurement results of phosphorus content in tungsten concentrates was 0.075%, and the expanded uncertainty was 0.002%, with the coverage factor k=2.
