COLLABORATIVE TRIAL AND QUALITY CONTROL IN CHEMICAL ANALYSIS

Abstract This paper deals with some practical problems related to the quality of analytical chemical data usually met in practice. Special attention is given to the topic of quality control in analytical chemistry, since analytical data is one of the primary information from which some important scientifically based decision are to be made. The present paper starts with brief description on some fundamental aspects associated with quality of analytical data, such as sources of variation of analytical data, criteria for quality of analytical method, quality assurance in chemical analysis. The assessment of quality parameter for analytical method like the use of standard materials as well as standard methods is given. Concerning with the quality control of analytical data, the use of several techniques, such as control samples and control charts, in monitoring analytical data in quality control program are described qualitatively. In the final part of this paper, some important remarks for the preparation of collaborative trials, including the evaluation of accuracy and reproducibility of analytical method are also given Keywords: collaborative trials, quality control, analytical data Abstract This paper deals with some practical problems related to the quality of analytical chemical data usually met in practice. Special attention is given to the topic of quality control in analytical chemistry, since analytical data is one of the primary information from which some important scientifically based decision are to be made. The present paper starts with brief description on some fundamental aspects associated with quality of analytical data, such as sources of variation of analytical data, criteria for quality of analytical method, quality assurance in chemical analysis. The assessment of quality parameter for analytical method like the use of standard materials as well as standard methods is given. Concerning with the quality control of analytical data, the use of several techniques, such as control samples and control charts, in monitoring analytical data in quality control program are described qualitatively. In the final part of this paper, some important remarks for the preparation of collaborative trials, including the evaluation of accuracy and reproducibility of analytical method are also given Keywords: collaborative trials, quality control, analytical data

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An Analytical Method and Quality Control Program for Studies of Currently Used Pesticides in Surface Waters

Quality Assurance for Environmental Measurements ◽

10.1520/stp30293s ◽

2008 ◽

pp. 116-116-17 ◽

Cited By ~ 3

Author(s):

JW Kramer ◽

DB Baker

Keyword(s):

Quality Control ◽

Surface Waters ◽

Analytical Method ◽

Control Program ◽

Quality Control Program

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A Data Quality Control Program for Computer-Assisted Personal Interviews

Nursing Research and Practice ◽

10.1155/2012/303816 ◽

2012 ◽

Vol 2012 ◽

pp. 1-8 ◽

Cited By ~ 9

Author(s):

Janet E. Squires ◽

Alison M. Hutchinson ◽

Anne-Marie Bostrom ◽

Kelly Deis ◽

Peter G. Norton ◽

...

Keyword(s):

Quality Control ◽

Data Quality ◽

Control Program ◽

Quality Data ◽

Computer Assisted ◽

Data Quality Control ◽

Process Data ◽

Quality Control Program ◽

High Quality Data

Researchers strive to optimize data quality in order to ensure that study findings are valid and reliable. In this paper, we describe a data quality control program designed to maximize quality of survey data collected using computer-assisted personal interviews. The quality control program comprised three phases: (1) software development, (2) an interviewer quality control protocol, and (3) a data cleaning and processing protocol. To illustrate the value of the program, we assess its use in the Translating Research in Elder Care Study. We utilize data collected annually for two years from computer-assisted personal interviews with 3004 healthcare aides. Data quality was assessed using both survey and process data. Missing data and data errors were minimal. Mean and median values and standard deviations were within acceptable limits. Process data indicated that in only 3.4% and 4.0% of cases was the interviewer unable to conduct interviews in accordance with the details of the program. Interviewers’ perceptions of interview quality also significantly improved between Years 1 and 2. While this data quality control program was demanding in terms of time and resources, we found that the benefits clearly outweighed the effort required to achieve high-quality data.

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A GC-FID Validated Method for the Quality Control of Eucalyptus globulus Raw Material and its Pharmaceutical Products, and GC-MS Fingerprinting of 12 Eucalyptus Species

Natural Product Communications ◽

10.1177/1934578x1400901233 ◽

2014 ◽

Vol 9 (12) ◽

pp. 1934578X1400901

Author(s):

Paula Carolina Pires Bueno ◽

Milton Groppo Junior ◽

Jairo Kenupp Bastos

Keyword(s):

Quality Control ◽

Essential Oil ◽

Analytical Method ◽

Eucalyptus Globulus ◽

Pharmaceutical Products ◽

Raw Material ◽

Eucalyptus Species ◽

Internal Standardization ◽

And Control

In this work we have validated a method to standardize and control the quality of Eucalyptus globulus raw material and phytomedicines containing either the essential oil or the fluid extract of this plant in the final formulation. Internal standardization provided a simple, fast, and reproducible GC-FID analytical method that accurately quantified 1,8-cineol in different E. globulus sub-products, such as its essential oil, dried leaves, fluid extract, and syrup. In addition, GC-MS identification of the main compounds of E. globulus species afforded fingerprints for the qualitative analysis of different Eucalyptus species.

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Concentration and bioavailability of fluoride in mouthrinses prepared in dispensing pharmacies

Journal of Applied Oral Science ◽

10.1590/s1678-77572005000100009 ◽

2005 ◽

Vol 13 (1) ◽

pp. 41-46 ◽

Cited By ~ 1

Author(s):

Cínthia Pereira Machado Tabchoury ◽

Carla Noujain Pierobon ◽

Jaime Aparecido Cury

Keyword(s):

Quality Control ◽

Dental Enamel ◽

Control Program ◽

Positive Control ◽

Negative Control ◽

Deionized Water ◽

Quality Control Program ◽

Negative Controls ◽

The City

Considering the importance of medication quality control and that mouthrinses for dental caries prevention have commonly been prepared in dispensing pharmacies, this study assessed formulations containing 0.05% NaF acquired from 6 dispensing pharmacies in the city of Piracicaba, S.P. The mouthrinse formulations were purchased in 3 separate periods and coded from A to F. Fluoride ion (F-) concentration was determined in all formulations in the 3 periods, and in those acquired in the 3rd period, the bioavailability of fluoride with dental enamel with caries-like lesions and the pH of products were evaluated. A solution of 0.05% NaF and distilled deionized water were used, respectively, as positive and negative controls. In the bioavailability analysis, fluoride present in dental enamel was determined removing, by acid etching, two layers of enamel; fluoride in the acid extract was determined with a specific electrode. The mouthrinses prepared in 5 pharmacies presented a F- concentration close to the expected value, except for the product prepared in one of them, in which a mean of 0.01% NaF was found. All products were more efficient than the negative control (p<0.05) in terms of reactivity with dental enamel, but differences among them were observed with regard to the positive control (p<0.05). The data suggest that a quality control program should be implemented in dispensing pharmacies to guarantee the quality of fluoridated mouthrinses formulated.

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SEVEN TOOLS AS THE PROBLEM SOLVING WAYS T0 IMPROVE QUALITY CONTROL

MECHA JURNAL TEKNIK MESIN ◽

10.35439/mecha.v3i2.15 ◽

2021 ◽

pp. 10-15

Keyword(s):

Quality Control ◽

Problem Solving ◽

Control Charts ◽

Management Tools ◽

Quality Improvement Process ◽

Goods And Services ◽

Customer Trust ◽

And Control ◽

Quality Tools

There are many ways for the company to reach a good standard for their goods and services. Standard is essential to achieve a level of customer trust. The company must be maintaining the quality of their services and products, including in this case the quality of goods beside the services. To ensure its achievement, a directed management system and processes are needed to achieve the level of customer trust. Many companies use quality tools to help monitor and manage their quality system. There are several types of tools that can be used. But the more, there are seven management tools for quality control are the most common. Seven tools can be used by any professional to ease the quality improvement process like flowcharts, check sheets, Pareto diagrams, cause and effect diagrams, histograms, scatter diagrams, and control charts. Key words : seven tools, control, quality, problem solving

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