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2.4. Sample preparation
2.4.1. Extraction in the artificial sweat solution
Textile samples were dried for 48 h at 60 °C before analysis,
and afterwards cut and weighed. 1.5 g of a sample was mixed for
2 h at 40 °C with 25 mL of artificial sweat solution, which was
prepared according to the ISO 3160/2 standard. After filtration,
the solutions were analyzed for all the elements by inductively
coupled plasma-optical emission spectrometry (ICP-OES).
2.4.2. Microwave digestion
For the determination of the total metal content of textile
materials, the samples were dried for 48 h at 60 °C, cut and
weighed. 0.5 g of dried samples were put into the digestion
vessels of the microwave oven and digested with 8 mL of 7 M
nitric acid. A closed-vessel microwave digestion system MLS
1200 Mega (produced by Milestone) equipped with a
temperature control was used for the sample digestion. The
temperature program was as follow
2.4.1. Extraction in the artificial sweat solution
Textile samples were dried for 48 h at 60 °C before analysis,
and afterwards cut and weighed. 1.5 g of a sample was mixed for
2 h at 40 °C with 25 mL of artificial sweat solution, which was
prepared according to the ISO 3160/2 standard. After filtration,
the solutions were analyzed for all the elements by inductively
coupled plasma-optical emission spectrometry (ICP-OES).
2.4.2. Microwave digestion
For the determination of the total metal content of textile
materials, the samples were dried for 48 h at 60 °C, cut and
weighed. 0.5 g of dried samples were put into the digestion
vessels of the microwave oven and digested with 8 mL of 7 M
nitric acid. A closed-vessel microwave digestion system MLS
1200 Mega (produced by Milestone) equipped with a
temperature control was used for the sample digestion. The
temperature program was as follow
2.4.样品制备
2.4.1. 萃取在人工汗水解决纺织样品干燥48h后在60°C分析前, 后来减体重. 1.5克样品混为2小时40°C与25毫升的人工汗解, 它是按照ISO3160/2标准. 过滤后,提出了解决方案,分析了各元素的电感耦合等离子体光发射光谱仪(ICP-oes).
2.4.2. 微波消化用于测定总金属含量纺织原料 样品干燥48h后在60°C,减体重. 0.5g干燥的样品被放进消化船只的微波炉和消化8毫升 7米的硝酸. 一密闭容器微波消解系统mls1200超级(制作的里程碑)装有一个温度控制被用于 消解. 温度程序如下:5分钟,在150°c(功率250瓦) 15分钟,180℃(300W)和20分钟时的最高温度200度(350w). 由此解冷,填补了10毫升带7米,硝酸分析ICP-OES法. 参考材料棉花微量元素分析原子能机构-五-9消化一样.