TABULAR CUSUM CONTROL CHARTS OF CHEMICAL VARIABLES APPLIED TO THE CONTROL OF SURFACE WATER QUALITY

被引：2
|
作者：
Follador, Franciele A. C. [1 ]
Vilas Boas, Marcio A. [2 ]
Schoenhals, Marlise [3 ]
Hermes, Eliane [4 ]
Rech, Clovis
机构：
[1] Unioeste Univ Estadual Oeste Parana, Oeste, Parana, Brazil
[2] Unioeste, Oeste, Parana, Brazil
[3] UTFPR Univ Tecnol Fed Parana, Curitiba, Parana, Brazil
[4] UFPR Univ Fed Parana, Curitiba, Parana, Brazil
来源：
ENGENHARIA AGRICOLA | 2012年 / 32卷 / 05期
关键词：
environmental planning; control charts; water quality;
D O I：
10.1590/S0100-69162012000500014
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
The aim of this study was to evaluate the application possibility of tabular CUSUM control charts in the quality control of chemical variables in surface water. It was performed bibliographic and field research to collect water samples from 2003 to 2009, totaling 30 samples, some monthly and others semi-annual in order to observe the variables that regulate water quality. It was found that these charts may be applied to control the quality of river water; showing to be effective in the perception of changes during the process, especially for small samples (n=1) which there is no repetition as in this research. It was also concluded that the Mandurim River does not presents significant levels of pollution.
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页码：950 / 959
页数：10
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