CAJ | 학술논문

建立了用离子色谱-电感耦合等离子体质谱法检测玩具材料迁移液中六价铬的新方法。采用阴离子交换色谱柱、中性NH4NO3淋洗液，结合梯度洗脱和碰撞反应池技术。实验表明，本方法可以很好地分离溶液中的三价铬和六价铬。当进样量为100μL时，对溶液中六价铬的检出限达到0.02μg/L。本方法灵敏度高，线性范围宽，加标回收率接近100%，能够满足新指令对玩具材料中可迁移六价铬的检测要求。
건립료용리자색보-전감우합등리자체질보법검측완구재료천이액중륙개락적신방법。채용음리자교환색보주、중성NH4NO3림세액，결합제도세탈화팽당반응지기술。실험표명，본방법가이흔호지분리용액중적삼개락화륙개락。당진양량위100μL시，대용액중륙개락적검출한체도0.02μg/L。본방법령민도고，선성범위관，가표회수솔접근100%，능구만족신지령대완구재료중가천이륙개락적검측요구。
To cope with the new EU toy safety directive, we developed a new method based on ion chromatography combined with inductively coupled plasma mass spectrometry (IC-ICP-MS) to measure chromium (VI) in the migration solution of toy materials. This method engaged IonPac AG11 anion-exchange column and neutral NH4NO3 mobile phase, with gradient elution and collision cell technology. The results showed that chromium (III) and chromium (VI) could be separated very well. A limit of detection of 0.02μg/L for chromium (VI) was obtained with an injection volume of 100μL. This method is of high sensitivity, wide linearity range, and good recovery rate (approaching 100 %), which can meet the requirements of new directive for determination of migratable chromium (VI) in toy materials.