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| “Standard”
Nutrient Methods |
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| (WOCE,
mostly) |
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| • | Nitrate
& Nitrite: Sulfanilamide (SAN) + |
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| naphthyl-ethylaminediamine
(NED) |
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| • | Phosphate
& Silica: Ammonium Molybdate + |
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| reducing
agents (hydrazine sulfate, stannous |
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| chloride) |
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| • | Ammonia:
alkaline phenol + sodium |
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| hypochlorite
(bleach) |
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