Accreditation and Quality Assurance最新文献_第7页

Evaluation of the 1R6F certified reference cigarette for proficiency testing of mainstream smoke parameters 评估1R6F认证的参考卷烟对主流烟雾参数的能力测试

IF 0.9 4区工程技术

Accreditation and Quality Assurance Pub Date : 2023-03-13 DOI: 10.1007/s00769-023-01534-1

Stacey Slone, C. Ruth McNees, Matt Craft, Huihua Ji, Andrew Shearer, Brent Shelton, Ling Yuan, Orlando Chambers

{"title":"Evaluation of the 1R6F certified reference cigarette for proficiency testing of mainstream smoke parameters","authors":"Stacey Slone, C. Ruth McNees, Matt Craft, Huihua Ji, Andrew Shearer, Brent Shelton, Ling Yuan, Orlando Chambers","doi":"10.1007/s00769-023-01534-1","DOIUrl":"10.1007/s00769-023-01534-1","url":null,"abstract":"<div><p>A goal of the cooperative agreement between the U.S. Food and Drug Administration and the Center for Tobacco Reference Products (CTRP) at the University of Kentucky was to produce a standard reference cigarette for researchers to further tobacco science. The 1R6F certified reference cigarette for analytical testing was developed to be typical of an American blend cigarette. The cigarettes have been used in proficiency testing (PT) schemes under the supervision of the CTRP since 2016 for a variety of parameters. Data were compared from 8 rounds of PT schemes submitted by participating laboratories, which include various international stakeholders comprised of academic institutions, federal research/regulatory laboratories, tobacco product manufacturers, and independent contract testing laboratories. Evaluation of the datasets for harmful and potentially harmful constituents (HPHCs) within the mainstream smoke of the 1R6F certified reference cigarette included tobacco-specific nitrosamines (TSNA), tar, nicotine, and carbon monoxide (TNCO), and Benzo[<i>α</i>]pyrene (B<i>α</i>P). Of the datasets evaluated, less than 5 % resulted in either a warning or alert, and less than 2 % resulted in an alert. Comparisons across multiple PT rounds revealed no significant differences in the consensus means of the tested parameters. Evaluation of data submitted by participating laboratories for multiple proficiency test rounds shows that the 1R6F certified reference cigarette is an acceptable material as a control reference for the analysis of HPHCs which is imperative since some stakeholders may be required to participate in, and receive satisfactory results, from PT for accreditation purposes.</p></div>","PeriodicalId":454,"journal":{"name":"Accreditation and Quality Assurance","volume":"28 2","pages":"69 - 76"},"PeriodicalIF":0.9,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00769-023-01534-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4549308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correction to: Improving performance evaluation via the provision of proficiency testing programmes in Asia–Pacific with metrologically traceable reference values for inorganic elements 更正:通过在亚太地区提供具有计量可追溯的无机元素参考值的能力测试计划，改善绩效评估

IF 0.9 4区工程技术

Accreditation and Quality Assurance Pub Date : 2023-03-07 DOI: 10.1007/s00769-023-01536-z

Yiu-Tung Wong, Alvin Wai-Hong Fung, Yiu‑Chung Yip, Della Wai-Mei Sin

引用次数: 0

Paul De Bievre down under: practical metrology in chemistry and its principles 保罗·德·比夫尔:化学中的实用计量学及其原理

IF 0.9 4区工程技术

Accreditation and Quality Assurance Pub Date : 2023-03-04 DOI: 10.1007/s00769-023-01535-0

Gary Price

引用次数: 0

On the optimal use of silver–silver chloride reference electrodes 银-氯化银参比电极的最佳使用

IF 0.9 4区工程技术

Accreditation and Quality Assurance Pub Date : 2023-02-07 DOI: 10.1007/s00769-023-01533-2

Igor Maksimov, Toshiaki Asakai, Masaki Ohata

引用次数: 0

Laboratory glassware cleaning validation in pharmaceutical industry: a case study 制药行业实验室玻璃器皿清洁验证:案例研究

IF 0.9 4区工程技术

Accreditation and Quality Assurance Pub Date : 2023-02-06 DOI: 10.1007/s00769-023-01531-4

Linda Belgacem, Redouane Amine Cherif

{"title":"Laboratory glassware cleaning validation in pharmaceutical industry: a case study","authors":"Linda Belgacem, Redouane Amine Cherif","doi":"10.1007/s00769-023-01531-4","DOIUrl":"10.1007/s00769-023-01531-4","url":null,"abstract":"<div><p>Glassware cleaning is an essential part of pharmaceutical industry’s quality process, although, to date, no precise methodology is recommended by the pharmaceutical regulations. This study focuses on developing a detailed validation procedure for laboratory glassware cleaning and applying it routinely in quality control labs. The first step was the determination of the worst-case among raw materials controlled on a pharmaceutical site by using the failure mode effects analysis (FMEA) approach based on water solubility (WS), flask volume (FV), concentration (C), detectability (D) according to the absorptivity, and the probability (P) of the occurrence of the risk based on raw material analysis frequency. The adopted manual cleaning method was validated on three series of six flasks. Absorbances at <i>λ</i><sub>max</sub> of cleaned and worst-case flasks were compared to the limit of detection (LOD). Methylparaben was found to be the worst-case. Cleaning validation was carried out on 50 mL flasks containing aqueous solutions at 0.11 g/L after a contact time of 20 min under stirring. A prewash with tap water, a proper wash with a 95-V/5-V water/detergent solution (quaternary ammonium), and a final wash with purified water were carried out. The absorbances of all the cleaned flasks were lower than those of the worst-case LOD (< 0.0112). The selected cleaning procedure has been successfully validated. The proposed approach precisely describes the steps to be followed and can be adapted by other pharmaceutical industries as part of their laboratory glassware cleaning validation methodology.</p></div>","PeriodicalId":454,"journal":{"name":"Accreditation and Quality Assurance","volume":"28 2","pages":"59 - 64"},"PeriodicalIF":0.9,"publicationDate":"2023-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4248768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Development of certified reference materials of ethanol in aqueous solution resulting from the participation of GUM in EMPIR 16RPT02 ALCOREF project GUM参与了EMPIR 16RPT02 ALCOREF项目，开发了水溶液中乙醇的标准物质

IF 0.9 4区工程技术

Accreditation and Quality Assurance Pub Date : 2023-01-27 DOI: 10.1007/s00769-022-01529-4

Piotr Janko, Ewa Malejczyk, Michał Nawotka

{"title":"Development of certified reference materials of ethanol in aqueous solution resulting from the participation of GUM in EMPIR 16RPT02 ALCOREF project","authors":"Piotr Janko, Ewa Malejczyk, Michał Nawotka","doi":"10.1007/s00769-022-01529-4","DOIUrl":"10.1007/s00769-022-01529-4","url":null,"abstract":"<div><p>The measurement of alcohol concentration in exhaled air is used worldwide for sobriety checks by police and other services. Breath alcohol analyzers are instruments for the determination of alcohol (ethanol) mass concentration in exhaled air. These instruments are evaluated and calibrated in many countries (among others in Poland) using wet gas standards produced in situ from aqueous standard solutions in breath simulators. The value of the mass fraction of ethanol in the solution is necessary to determine the concentration of ethanol in the produced gas standard. New reference materials of ethanol in an aqueous solution intended for use in breath simulators for calibration and testing of breath alcohol analyzers were developed as a result of the Central Office of Measures (GUM) participation in the EMPIR 16RPT02 ALCOREF project. CRMs were certified following standard ISO 17034:2016 and ISO Guide 35:2017 ensuring traceability of certified values to SI units and covering ethanol content ranging from 0.129 g/kg to 5.051 g/kg required by OIML R126. The certified mass fractions of the ethanol and expanded uncertainties (<i>k</i> = 2) of the four reference materials representative for the entire range were (0.2588 ± 0.00040) g/kg (GUM 12.2), (0.6470 ± 0.00074) g/kg (GUM 12.3), (1.0352 ± 0.0014) g/kg (GUM 12.4) and (5.0506 ± 0.0092) g/kg (GUM 12.8). The CRMs produced by the procedure presented in this paper have been found to be fit for purpose.</p></div>","PeriodicalId":454,"journal":{"name":"Accreditation and Quality Assurance","volume":"28 1","pages":"35 - 48"},"PeriodicalIF":0.9,"publicationDate":"2023-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5045094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improving performance evaluation via the provision of proficiency testing programmes in Asia–Pacific with metrologically traceable reference values for inorganic elements 通过在亚太地区提供具有计量可追溯参考值的无机元素能力测试计划，改善绩效评估

IF 0.9 4区工程技术

Accreditation and Quality Assurance Pub Date : 2023-01-27 DOI: 10.1007/s00769-022-01528-5

Yiu-Tung Wong, Alvin Wai-Hong Fung, Yiu-Chung Yip, Della Wai-Mei Sin

{"title":"Improving performance evaluation via the provision of proficiency testing programmes in Asia–Pacific with metrologically traceable reference values for inorganic elements","authors":"Yiu-Tung Wong, Alvin Wai-Hong Fung, Yiu-Chung Yip, Della Wai-Mei Sin","doi":"10.1007/s00769-022-01528-5","DOIUrl":"10.1007/s00769-022-01528-5","url":null,"abstract":"<div><p>This paper reviews some proficiency testing (PT) programmes operated under the auspices of Asia Pacific Metrology Programme and Asia Pacific Laboratory Accreditation Cooperation Joint Proficiency Testing Working Group. The assigned values of these joint PTs are traceable to the SI. Provision of PTs based on reference values (PTRVs) with metrological traceability enables meaningful performance evaluation and assessment of metrological comparability of the participants’ results. Special focus will be given to those joint PTs related to analysis of inorganic elements in various sample matrices organized or co-organized by Government Laboratory of Hong Kong, China. Comparison based on different evaluation criteria (i.e. consensus value vs reference value) is carried out. Comprehensive evaluation and review of some performance indicators revealed several crucial findings such as the performance of different analytical conditions, recent analytical trends and areas of improvements. The organization of a series of these joint PTs could be regarded as a strong support of the concept that PTRV with metrological traceable reference values is an effective way to promote the concept of metrological traceability to the field laboratories and provide a meaningful performance evaluation tool for assessment of PT performance.\u0000</p></div>","PeriodicalId":454,"journal":{"name":"Accreditation and Quality Assurance","volume":"28 1","pages":"21 - 33"},"PeriodicalIF":0.9,"publicationDate":"2023-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00769-022-01528-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5042306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Application of stochastic Bayesian modeling to assess quality and safety profile of tea in China market 随机贝叶斯模型在中国茶叶质量安全评价中的应用

IF 0.9 4区工程技术

Accreditation and Quality Assurance Pub Date : 2023-01-25 DOI: 10.1007/s00769-023-01532-3

Yongheng Yang, Shizhong Qin, Dongye Sun, Ruyi Sha, Jianwei Mao

{"title":"Application of stochastic Bayesian modeling to assess quality and safety profile of tea in China market","authors":"Yongheng Yang, Shizhong Qin, Dongye Sun, Ruyi Sha, Jianwei Mao","doi":"10.1007/s00769-023-01532-3","DOIUrl":"10.1007/s00769-023-01532-3","url":null,"abstract":"<div><p>Limited information was available on the quality and safety profile of tea in China, even though food quality and safety of tea is an issue of great concern to consumers and the public. Stochastic Bayesian modeling was employed in this study to investigate food quality and safety profile of tea in China market. Results indicated that the overall nonconforming rate (95 % CI, confidence interval) of tea was 2.6 ‰ (1.3 ‰ to 4.5 ‰), indicating a high level for the quality and safety status of tea in market. Pesticide residues exceeding maximal limit (MRLs) was the major cause leading to nonconformity of tea, with estimated incidences (95 % CI) of 11.7 ‰ (0.5 ‰ to 53.2 ‰), 1.1 ‰ (0.4 ‰ to 2.0 ‰), 2.3 ‰ (0.6 ‰ to 5.5 ‰), and 0.55 ‰ (0.06 ‰ to 1.51 ‰), respectively, for Yellow tea, Green tea, and Oolong tea; whereas illegal application of additives was more likely to occur in black tea, with an incidence of 1.1 ‰ (0.4 ‰ to 2.7 ‰), despite that an estimated incidence of 2.9 ‰ (0.4 ‰ to 16.1 ‰) was generated for Yellow tea due to fewer inspects and small sample sizes involved for analysis. The difference in quality and safety status of tea between provinces was statistically insignificant, as indicated by overlapped 95 % CIs of nonconforming rates. Results of this study provided reliable information on quality and safety profile of tea in China market, and suggested that application of pesticides during tea plantation and illegal use of additives during black tea production worth more attention in respect of quality and safety of tea.</p></div>","PeriodicalId":454,"journal":{"name":"Accreditation and Quality Assurance","volume":"28 1","pages":"49 - 55"},"PeriodicalIF":0.9,"publicationDate":"2023-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00769-023-01532-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4970431","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Establishment of Cryptococcus neoformans and C. gattii as certified reference materials according to the requirements of ISO 17034:2016 根据ISO 17034:2016的要求，建立新型隐球菌和C. gatii作为认证标准物质

IF 0.9 4区工程技术

Accreditation and Quality Assurance Pub Date : 2023-01-24 DOI: 10.1007/s00769-023-01530-5

Aline da Silva Soares Souto, Carlos Roberto Sobrinho do Nascimento, Carla de Oliveira Rosas, Marilia Martins Nishikawa, Maria Helena Simões Villas Bôas, Manuela da Silva

{"title":"Establishment of Cryptococcus neoformans and C. gattii as certified reference materials according to the requirements of ISO 17034:2016","authors":"Aline da Silva Soares Souto, Carlos Roberto Sobrinho do Nascimento, Carla de Oliveira Rosas, Marilia Martins Nishikawa, Maria Helena Simões Villas Bôas, Manuela da Silva","doi":"10.1007/s00769-023-01530-5","DOIUrl":"10.1007/s00769-023-01530-5","url":null,"abstract":"<div><p>The use of certified reference materials (CRMs) is essential for laboratories that want to achieve reliable results because these materials have well-defined property values that enable the traceability of certain parameters in several areas. The production of CRMs for microbiological tests is complex, as there is a natural instability of microorganisms. The objective of this study was to establish <i>Cryptococcus neoformans</i> and <i>Cryptococcus gattii</i> as CRM, according to the requirements of ISO 17034. The availability of these materials will assist in the cryptococcosis diagnosis and support the academic community, since cryptococcosis is among the most lethal mycoses and affects more than one million people worldwide each year. <i>C. neoformans</i> CFRVS CRM 40,323 and <i>C. gattii</i> CFRVS CRM 40,324 batches, in skim milk at 20 %, were homogeneous and stable for 1 year. The materials were also stable at 4 °C, 25 °C and 35 °C, temperatures that simulate transportation conditions, for 7 days. In addition to the quantitative characterization, qualitative characterization of materials was conducted by observing melanin production, <span>l</span>-Canavanine Glycine Bromothymol Blue (CGB) Agar test and by RFLP-URA5 analyses. Certified property values and their associated uncertainties were assigned for each CRM. For <i>C. neoformans</i> CFRVS CRM 40,323, expanded uncertainty (U<sub>CRM</sub>) was 13 CFU mL<sup>−1</sup> for 33 CFU mL<sup>−1</sup> property value. For <i>C. gattii</i> CFRVS CRM 40,324, U<sub>CRM</sub> was 9.2 CFU mL<sup>−1</sup> for 15 CFU mL<sup>−1</sup> property value. Our study contributes to the development of CRM production in the microbiological field, whose supply is still very limited worldwide.</p></div>","PeriodicalId":454,"journal":{"name":"Accreditation and Quality Assurance","volume":"28 1","pages":"11 - 19"},"PeriodicalIF":0.9,"publicationDate":"2023-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00769-023-01530-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4928995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Indonesian proficiency testing for electrolytic conductivity measurement of synthetic wastewater: a comparison of performance evaluation based on four standardized performance statistics 印度尼西亚对合成废水电解电导率测量的熟练程度测试:基于四种标准化性能统计的性能评估的比较

IF 0.9 4区工程技术

Accreditation and Quality Assurance Pub Date : 2023-01-18 DOI: 10.1007/s00769-022-01526-7

Fransiska Sri Herwahyu Krismastuti, Nuryatini Hamim, Ayu Hindayani

{"title":"Indonesian proficiency testing for electrolytic conductivity measurement of synthetic wastewater: a comparison of performance evaluation based on four standardized performance statistics","authors":"Fransiska Sri Herwahyu Krismastuti, Nuryatini Hamim, Ayu Hindayani","doi":"10.1007/s00769-022-01526-7","DOIUrl":"10.1007/s00769-022-01526-7","url":null,"abstract":"<div><p>Electrolytic conductivity is recognized as one of the parameters to determine water quality. An accurate measurement of electrolytic conductivity of wastewater before dumping it into the environment is crucial to prevent water pollution. Therefore, the ability of laboratories in conducting accurate and comparable measurements of electrolytic conductivity is important to guarantee the measurement results. The measurement quality of the laboratories can be determined by participating in a proficiency testing (PT) conducted by accredited PT provider. In 2018, Chemical Metrology Laboratory, Indonesian Institute of Sciences (LIPI), as a PT provider, conducted a PT for electrolytic conductivity measurement with synthetic wastewater as the PT test item. It was prepared from cations and anions commonly found in natural wastewater. A total of 25 participants from Indonesian testing laboratories reported their electrolytic conductivity measurements. These results were then evaluated using a standardized performance statistic of <i>z</i> score, <i>z</i>′ score, <i>E</i><sub>n</sub> score and ζ (zeta) score. There were 20 laboratories having satisfactory results evaluated using both <i>z</i> score and <i>z</i>′ score, while only 14 laboratories were considered having a successful performance evaluated using <i>E</i><sub>n</sub> score and ζ score. The evaluation results show that the participants already have the ability to measure the electrolytic conductivity value but some of them still need improvement in estimating the uncertainty.\u0000</p></div>","PeriodicalId":454,"journal":{"name":"Accreditation and Quality Assurance","volume":"28 1","pages":"1 - 9"},"PeriodicalIF":0.9,"publicationDate":"2023-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00769-022-01526-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4721573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0