A quality assurance program for determination of herbicides in estuarine waters.
A quality assurance program  was developed for two grantee laboratories studying the herbicides atrazine and linuron in Chesapeake Bay water. Proposed methodologies were evaluated by performance and system audits. The objectives of the quality assurance program and the results of the audit program are discussed.
D001280:Atrazine / Q000032:analysis*; D004782:Environmental Health; D006291:Health Policy; D006540:Herbicides / Q000032:analysis*; D008044:Linuron / Q000032:analysis*; D008396:Maryland; D010573:Pesticide Residues / Q000032:analysis; D011786:Quality Control; D012623:Seawater / Q000032:analysis*; D014877:Water Pollution, Chemical / Q000032:analysis*
D006540:Herbicides; D010573:Pesticide Residues; D008044:Linuron; D001280:Atrazine