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DRINKING WATER QUALITY

DRINKING WATER QUALITY

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• semiconductors and light-emitting diodes. HEALTH EFFECTS OF ARSENIC Arsenic has been recognized from ancient times as an acute poison. Large oral doses of arsenic above 60,000 parts per billion (ppb) in food or water can produce sudden death. Levels of …

  Light, Diode, Emitting, Emitting diode

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