ANALYSIS OF NITROSAMINES 319 Table XVII Experimental Data From HPLC-UV Applications for Consumer Products Product type No. of samples N-nitrosodiethanolamine, ppb References Shampoos 1 1 99 Creams 1 1 99 Shaving creams 1 1 99 Diethanolamine 2 20000- 127000 99 Triethanolamine 3 •800 10, 99 Lauramide DEA 1 50 74 Table XVIII Experimental Data From Colorimetric Applications for Consumer Products No. of N-nitrosodiethanolamine, Product type samples ppb References Shampoos w/bronopol & MEALS a 11 Shampoos w/cocamide DEA b and SLES c 3 Shampoos w/bronopol & ALS d 3 Shampoos w/o bronopol 6 Creams w/bronopol & TEA e 12 Creams w/bronopol and antioxidants 10 Creams w/o bronopol 25 5-22 32 7 32 2.5 32 3.9 32 2.5-15 32 2.5 32 2.5 32 MEALS, Monoethanolamine lauryl sulfate. DEA, Diethanolamine. SLES, Sodium lauryl ether sulfate. ALS, Ammonium lauryl sulfate. TEA, Triethanolamine. Table XlX Experimental Data From Direct Chemiluminescence Applications for Consumer Products Product type No. of samples Total nitrosamines, as N-nitrosodiethanolamine, ppb References Shampoos Make-up Creams Lotions 1 1 •350 •1240 33 33 33 33

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