Distribution, sources, and ecological risk assessment of HCHs and DDTs in water from a typical coal mining subsidence area in Huainan, China

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

“…RT 7.45–13.26 [ 123 ] Water 8 Mixed reference sample: 70–140; surrogate: 70-130 <5 GC-MS: Splitless,. “the initial oven temperature was 80 °C, which was maintained for 1 min, then raised to 160 °C at a rate of 30 °C/min, maintained for 1 min, and finally raised to 265 °C at a rate of 3 °C/min and maintained for 1 min” [ 124 ] Water 24 MDL: 0.00001 to 0.00002 Spike mean: 66; surrogate mean: 92 <20 GC-MS; GC-ECD [ 99 ] Water 8 0.0024–0.0462 77.7–106.3 GC-MS: “oven temperature program began at 100 °C (held for 0.5 min) and was raised to 175 °C at 40 °C·min −1 (held for 2 min), before ramping to 190 °C at 5 °C·min −1 . It was then further increased to 205 °C at 20 °C·min −1 ” [ 125 ] Surface water 13 MDLs: 0.000022–0.000069 Surrogate: 80–110 1.50–5.54 GC-ECD: “initially at 80 °C (equilibrium time 1 min), increased to 150 °C at the rate of 20 °C/min and held for 2 min, before reaching at 300 °C at the rate of 5 °C/min, and then held for 5 min” [ 126 ] Surface water 9 0.000002–0.00003 0.000003–0.000061 Int std: 72-93 <1.8 GC-MSD: “The column temperature was initially held at 50 °C for 1 min, then increased to 160 °C at 7 °C/min and finally increased to 240 °C at 10 °C/min, and was held for 18 min” [ 127 ] Surface water 14 Water: 100; SM: 0.1 92–120 …”