Estimation of measurement uncertainty of coliforms in drinking water according to ISO19036:2019
ObjectiveThis study aimed to estimate the measurement uncertainty of coliforms in drinking water according to ISO19036:2019.MethodsBy designing protocols, the technical uncertainty (utech), matrix uncertainty (umatrix) and distribution uncertainty (udistrib) were estimated respectively, and the comb...
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The Editorial Office of Food and Machinery
2024-10-01
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| Series: | Shipin yu jixie |
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| Online Access: | http://www.ifoodmm.com/spyjx/article/abstract/20241010?st=article_issue |
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| author | ZHONG Wentao LU Lin LI Zheng ZHOU Peihua HONG Zhenbai ZHOU Cong |
| author_facet | ZHONG Wentao LU Lin LI Zheng ZHOU Peihua HONG Zhenbai ZHOU Cong |
| author_sort | ZHONG Wentao |
| collection | DOAJ |
| description | ObjectiveThis study aimed to estimate the measurement uncertainty of coliforms in drinking water according to ISO19036:2019.MethodsBy designing protocols, the technical uncertainty (utech), matrix uncertainty (umatrix) and distribution uncertainty (udistrib) were estimated respectively, and the combined uncertainty (uc(y)) and extended uncertainty (U) were calculated by combining the values of the three components.ResultsAfter estimating the measurement uncertainty of the second method of GB 4789.3—2016, the technical uncertainty was 0.120 2 log（CFU/mL）, the matrix uncertainty was 0.1 log（CFU/mL）, and the distribution uncertainty was 0.065 5 log（CFU/mL） and 0.026 1 log（CFU/mL）. When the result was 440 CFU/mL, the extended uncertainty was 0.34 log（CFU/mL）, expressed as （2.64±0.34） log（CFU/mL）.ConclusionAccording to ISO19036:2019, the estimation of measurement uncertainty for quantitative determinations of microorganisms in food is more scientific and convenient compared to current domestic standards. |
| format | Article |
| id | doaj-art-7eae5c94cf2f4db684f287a6228e7cc4 |
| institution | OA Journals |
| issn | 1003-5788 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | The Editorial Office of Food and Machinery |
| record_format | Article |
| series | Shipin yu jixie |
| spelling | doaj-art-7eae5c94cf2f4db684f287a6228e7cc42025-08-20T02:04:52ZengThe Editorial Office of Food and MachineryShipin yu jixie1003-57882024-10-014010687210.13652/j.spjx.1003.5788.2024.801131003-5788（2024）10-0068-05Estimation of measurement uncertainty of coliforms in drinking water according to ISO19036:2019ZHONG Wentao0LU Lin1LI Zheng2ZHOU Peihua3HONG Zhenbai4ZHOU Cong5Hunan Provincial Institute of Product and Commodity Goods Quality Inspection, Changsha, Hunan410007, ChinaHunan Provincial Institute of Product and Commodity Goods Quality Inspection, Changsha, Hunan410007, ChinaHunan Provincial Institute of Product and Commodity Goods Quality Inspection, Changsha, Hunan410007, ChinaHunan Provincial Institute of Product and Commodity Goods Quality Inspection, Changsha, Hunan410007, ChinaHunan Provincial Institute of Product and Commodity Goods Quality Inspection, Changsha, Hunan410007, ChinaHunan Provincial Institute of Product and Commodity Goods Quality Inspection, Changsha, Hunan410007, ChinaObjectiveThis study aimed to estimate the measurement uncertainty of coliforms in drinking water according to ISO19036:2019.MethodsBy designing protocols, the technical uncertainty (utech), matrix uncertainty (umatrix) and distribution uncertainty (udistrib) were estimated respectively, and the combined uncertainty (uc(y)) and extended uncertainty (U) were calculated by combining the values of the three components.ResultsAfter estimating the measurement uncertainty of the second method of GB 4789.3—2016, the technical uncertainty was 0.120 2 log（CFU/mL）, the matrix uncertainty was 0.1 log（CFU/mL）, and the distribution uncertainty was 0.065 5 log（CFU/mL） and 0.026 1 log（CFU/mL）. When the result was 440 CFU/mL, the extended uncertainty was 0.34 log（CFU/mL）, expressed as （2.64±0.34） log（CFU/mL）.ConclusionAccording to ISO19036:2019, the estimation of measurement uncertainty for quantitative determinations of microorganisms in food is more scientific and convenient compared to current domestic standards.http://www.ifoodmm.com/spyjx/article/abstract/20241010?st=article_issuemeasurement uncertaintytechnical uncertaintymatrix uncertaintydistributional uncertainty |
| spellingShingle | ZHONG Wentao LU Lin LI Zheng ZHOU Peihua HONG Zhenbai ZHOU Cong Estimation of measurement uncertainty of coliforms in drinking water according to ISO19036:2019 Shipin yu jixie measurement uncertainty technical uncertainty matrix uncertainty distributional uncertainty |
| title | Estimation of measurement uncertainty of coliforms in drinking water according to ISO19036:2019 |
| title_full | Estimation of measurement uncertainty of coliforms in drinking water according to ISO19036:2019 |
| title_fullStr | Estimation of measurement uncertainty of coliforms in drinking water according to ISO19036:2019 |
| title_full_unstemmed | Estimation of measurement uncertainty of coliforms in drinking water according to ISO19036:2019 |
| title_short | Estimation of measurement uncertainty of coliforms in drinking water according to ISO19036:2019 |
| title_sort | estimation of measurement uncertainty of coliforms in drinking water according to iso19036 2019 |
| topic | measurement uncertainty technical uncertainty matrix uncertainty distributional uncertainty |
| url | http://www.ifoodmm.com/spyjx/article/abstract/20241010?st=article_issue |
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