Spatio-temporal variations and ecological risks of organochlorine pesticides in surface waters of a plateau lake in China

Review of scientific literature on available methods of assessing organochlorine pesticides in the environment

“…RT 13 min [ 117 ] Agricultural effluents, WWTP 20 0.0001–0.005 0.0005–0.01 GC-MS: “the initial temperature of 80 °C (hold 1 min) increased to 170 °C at 10 °C/min (hold 10 min) then increased to 230 °C at 4 °C/min and finally increased to 280 °C at 3 °C/min (hold for 2 min), with a total acquisition time of 41 min” [ 118 ] Water, DP, SPM 25 MDLs: 0.00021 to 0.00152 MQLs: 0.00070 to 0.00507 surrogate spiked: 61.3–108.6 GC-MS: RT. 13.47–21.72 min [ 119 ] Surface and ground water 7 0.00008–0.00018 78–91 2–6 GC-MS: “The oven temperature began at 80 °C–200 °C at a rate of 10 °C per minute (5 min hold time) and increased to 270 °C at a rate of 5 °C per min (5 min hold time)” [ 120 ] Surface and groundwater 8 0.00003–0.00018 85–92.7 3.9–11.2 GC-ECD: “The oven temperature began at 60C for 1 min and increased to 290C (10 min hold time) at a rate of 4 C/min” [ 121 ] Virtual Organism, sediment 30 VO: 0.0043–0.0435; sediment: 0.00039–0.0276 VO: 22–72; sediment: 19-90 VO: 13–39; sediment: 12-40 HRGC/HRMS [ 27 ] Water and sediment 18 Water: 8.8 to 16.4; sediment: 0.0219 to 0.0298 water: 0.0279 to 0.0497 sediment: 0.0698 to 0.0902 Water: 74–110; sediment: 91–125 0.9–1.8 GC-MS: Splitless, “the oven temperature was set at 150 °C and held for 2 min, raised to ...…”

“…Instrument detection limits (IDLs) identified as 3(S/N) were substituted for substances that were not detected in the blank samples. If a certain compound was detected in the samples but its concentration was less than its MDL/IDL, it was deemed to be zero [ 119 ]. Furthermore, concentration less than LOD was assumed LOD/2 [ 105 , 257 , [260] , [261] , [262] ].…”