The soil and vegetable Hg had close relations with atmosphere Hg, and the automobile exhaust Hg contamination degree of the highway profiles increased with increasing road age and vehicle flow.

Robert Twilley and Guerry Holm of Louisiana State University (LSU) are investigating the degree to which two delta wetland characteristics may help mitigate oil contamination.

The contamination by Enterobacte sakazakii can be reduced by improving the materials quality and environment sanitation, and increasing the detection degree, achieving insure the infants' healthiness.