The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 08, 2020
Filed:
Nov. 01, 2016
Chinese Research Academy of Environmental Sciences, Beijing, CN;
Zhiyou Fu, Beijing, CN;
Fengchang Wu, Beijing, CN;
Lulu Chen, Beijing, CN;
Yingchen Bai, Beijing, CN;
Chenglian Feng, Beijing, CN;
Haiqing Liao, Beijing, CN;
Wenjing Guo, Beijing, CN;
Huixian Li, Beijing, CN;
CHINESE RESEARCH ACADEMY OF ENVIRONMENTAL SCIENCES, Beijing, CN;
Abstract
A method for determining ecological risk, particularly a method for the ecological risk assessment of a heavy metal in a river basin sediment based on a toxicity effect. The assessment method includes screening the main aquatic organisms in a river basin; sampling a sediment, and determining and detecting the heavy metal type; measuring the concentration of the heavy metal in the sediment; collecting the heavy metal release coefficient; collecting the heavy metal toxicity data and fitting the data; determining the heavy metal HCvalue according to a fitting equation; calculating the heavy metal toxicity response coefficient; calculating the ecological risk index of the heavy metal. This method can further include calculating the comprehensive ecological risk index of various types of heavy metals. The method can accurately reflect the ecological risk of a heavy metal on aquatic organisms in a river basin.