A study of the effects of chromium exposure on the growth of Pseudokirchneriella subcapitata (Korshikov) hindak evaluated by Central Composite Design and Response Surface Methodology

被引：17

作者：

Giloni-Lima, Patricia C. ^{[1
]}

Delello, Danieli ^{[1
]}

Cremonez, Marcelo L. M. ^{[1
]}

Eler, Marcia N. ^{[1
]}

Lima, Vanderlei A. ^{[2
]}

Espindola, Evaldo L. G. ^{[1
]}

机构：

[1] Univ Sao Paulo, Ecophysiol Lab Aquat Organisms, Res Ctr Water Resources & Appl Ecol, Engn Sch Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

[2] Univ Fed Sao Carlos, Dept Chem Engn, BR-13565905 Sao Carlos, SP, Brazil

来源：

ECOTOXICOLOGY | 2010年 / 19卷 / 06期

关键词：

Metal; Algae; Selenastrum capricornutum; RSM; CCD; Toxicity; OXIDATIVE STRESS; TOXICITY; VALIDATION; CADMIUM; SYSTEMS; METALS; COPPER; MOSS; ZINC;

D O I：

10.1007/s10646-010-0491-2

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

The aim of this study was to evaluate the effects of chromium exposure on the growth of P. subcapitata using the Central Composite Design (CCD) and Response Surface Methodology (RSM). The highest values for algal density and biomass were obtained in the longest exposure times and for the lowest chromium concentrations. The CCD used for the analysis of treatment combinations showed that a second order polynomial regression model was in good agreement with experimental results, with R (2) = 81.50 and 89.90; for algal density and biomass (p < 0.05), respectively. Only the exposure time was significant for algal density. For chlorophyll, in contrast, the exposure time, chromium concentration and their interaction significantly affected the growth of P. subcapitata. The findings confirmed the sensitivity of P. subcapitata to chromium (VI), which makes it a suitable bioindicator of environmental contamination for this metal.

引用

页码：1095 / 1101

页数：7

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