| 41. | But then a new test showed high dioxin levels on light fixtures.
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| 42. | But French officials say the dioxin problem is being addressed.
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| 43. | Cancer-causing dioxin is a byproduct of chlorine-based chemistry.
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| 44. | The dioxin was traced to effluents from chemical factories, he said.
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| 45. | He said concerns about dioxin contamination had been raised with Chinese officials.
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| 46. | Dioxin is a toxic waste byproduct of the manufacture of certain herbicides.
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| 47. | That brings dioxins right into their homes, Greenpeace said.
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| 48. | Some have called it the dioxin capital of the world.
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| 49. | Dioxins are toxic chemical compounds produced when waste is burned.
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| 50. | Dioxin is a byproduct of the manufacture of some herbicides and pesticides.
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