Distributions of polyhalogenated compounds in Hudson River (New York, USA) fish in relation to human uses along the river

► In the Hudson River, ► PBDEs in smallmouth bass follow human population patterns, but do not for striped bass. ► Proximity to known PCB sources govern PCB levels and patterns in fish. ► PBDFs were in smallmouth bass but not striped bass. PBDDs were present in one fish. ► PCDD/Fs were low in 29 of 30 fish. A 2,3,7,8-TCDD source affected one striped bass. ► PCBs contribute most to 2,3,7,8-TCDD toxic equivalents in 29 of 30 samples.