A bacterium-based contact assay for evaluating the quality of solid samples Results from an international ring-test

作者：Marques Catarina R^*; El Azhari Najoi; Martin Laurent Fabrice; Pandard Pascal; Meline Camille; Petre Alice L; Eckert Suzanne; Zipperle Juergen; Vana Martin; Maly Stanislav; Sindelarova Lucie; Amemori Anna Slavikova; Hofman Jakub; Kumar Anu; Doan Hai; McLaughlin Mike; Richter Elizabeth; Roembke Joerg

来源：Journal of Hazardous Materials, 2018, 352: 139-147.

DOI：10.1016/j.jhazmat.2018.03.022

• Arthrobacter globiformis
• Dehydrogenase activity
• Soils
• Wastes
• ISO 18187

The contact assay measuring the inhibition of Arthrobacter globiformis dehydrogenase activity as an endpoint to evaluate the toxicity of solid samples was tested in an international ring-test to validate its performance for ISO standardization (ISO/CD 18187). This work reports the results of the ring-test involving 9 laboratories from six countries. At least 8 valid data sets were obtained for each sample and more than three quarters of the participants attained the validity criteria defined in the standard. The coefficient of variation within (CVr) and between (CVR) laboratories was generally on average < 15% and < 30% for negative and positive controls, respectively. Regarding solid samples, the laboratories provided a similar ranking of the samples based on their toxicity, despite some variation in the LOEC values. The logarithmic within-lab standard deviation < 0.50 for soils and < 0.25 for wastes evidenced a good repeatability. The between-lab variability assessed by a CVR < 30%, minimum-maximum factor < 4 and a reproducibility standard deviation (SDR) < 0.13 for a greatpart of the solid samples, confirmed the test reproducibility. Overall, this assay proved to be robust, sensitive and feasible for routine use towards the quality assessment of soils and wastes.

• 出版日期2018-6-15