tailieunhanh - Pesticides in the AtmosphereDistribution, Trends, and Governing Factors - Chapter 2

Tất cả các nghiên cứu điều tra sự xuất hiện thuốc trừ sâu trong một hoặc nhiều các ma trận không khí (không khí, mưa, tuyết, sương mù, bình xịt). Bảng tóm tắt các đặc điểm được lựa chọn các nghiên cứu. Nghiên cứu từng được liệt kê trong thứ tự thời gian công bố trong bảng , và (ở cuối chương) tại một trong ba loại chính: Quy trình và các nghiên cứu phân phối ma trận (Bảng ), nhà nước và địa phương nghiên cứu giám sát (Bảng ), và quốc gia và các nghiên cứu. | CHAPTER 2 Characteristics of Studies Reviewed All reviewed studies investigated pesticide occurrence in one or more atmospheric matrices air rain snow fog aerosols . Table summarizes selected characteristics of the studies reviewed. Each study is listed in chronological order of publication in Tables and at end of chapter in one of three main categories Process and matrix distribution studies Table state and local monitoring studies Table and national and multistate monitoring studies Table . The sampling location s for each study is designated in corresponding Figures and by the study number and an optional letter that differentiates the sampling locations if there is more than one for a study. Laboratory studies and review papers are cited in the text as needed but they are not included in Tables and . Process and matrix distribution studies Table Figure generally measured the concentration distributions of one or more pesticides between various atmospheric matrices to determine their physical and chemical properties conttolling processes or in the development of sampling or analytical methodologies. Field studies that monitored one or more atmospheric dissipation processes of specific pesticides from specific applications are also included. Most studies involved relatively specialized sampling at one or several sites for several days weeks or months. State and local pesticide monitoring studies Table Figure were occurrence surveys for specific compounds or compound classes usually at more than one site within a specific area most typically within an area or region much smaller than the state in which they were done. This group includes a few studies with one location sampled over several months to several years as well as studies with many locations sampled for several days weeks or months. National and multistate pesticide monitoring studies Table Figure were occurrence surveys for .