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Acids, Aromatic and Plasticizers

Isomeric Aminobenzoic Acids, Phthalates - Silica

	Operating Conditions Sample Dissolved in: iso-octane: methylene chloride = 8:2 Adsorbent Used: DAI Silica 32-63 Stationary Phase: None Eluent: methylene chloride Sample Volume: 1.0 ml Flow rate: 14 ml/min Operating Pressure: 32 psi (for peaks 2&3) Column Size: 9mm x 300 mm Temperature: 20ºC Detection: UV detector 253 nm
	Substances Separated Sample (mg) Retention Volume (ml) 1. benzene 0.44 14.0 2. bis-(2-ethylhexyl) phthalate (DOP) 0.50 77.0 3. diisobutyl phthalate 0.67 161.0 4. diethylphthalate (DEP) 0.67 350.0

Isomeric Aminobenzoic Acids, Phthalate - Silica

	Operating Conditions Sample Dissolved in: iso-octane: methylene chloride = 8:2 Adsorbent Used: DAI Silica 32-63 Stationary Phase: None Eluent: methylene chloride Sample Volume: 1.0 ml Flow rate: 14 ml/min Operating Pressure: 32 psi (for peaks 2&3) Column Size: 9mm x 300 mm Temperature: 20ºC Detection: UV detector 253 nm
	Substances Separated Sample (mg) Retention Volume (ml) 1. benzene 0.44 14.0 (16.0)* 2. bis-(2-ethylhexyl) phthalate (DOP) 0.50 229.6 (51.2) 3. diisobutyl phthalate 0.67 364.0 (89.6) 4. diethylphthalate (DEP) 0.67 523.6 (140.8)

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