“…Rtimenapp and Hild [18] have used headspace-gas chromatography to determine 1,4-dioxane in cosmetic products, while Rastogi [19] has used a headspace gas chromatographic-mass spectrophotometric method [19]; 1,4-d8-dioxane has been used for quantification. Headspace gas chromatography has been also used to determine ethylene oxide levels in cosmetic products [20,21]. The most attention has been, however, devoted to the determination of ethylene oxide in air and medical device materials [22,23].…”