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为探讨各种粮食中常量与微量元素的含量,我们对泰安市26种原粮中11种常量与微量元素进行了调查。样品来源与处理于泰安农贸市场购新原粮26种(包括花生、芝麻)。将样品置于恒温干燥箱内,于105℃温度下干燥至恒重,待冷至室温后,用1/万的电子分析天平精确称取2g左右(准至第4位小数),分别放入压力消化器中,加入12ml混合酸(高氯酸:硝酸为1:4),然后于恒温箱中缓缓升温至140℃,恒温加热3～4h,冷却后,将消化液转移到50ml溶量瓶中,用双蒸水定溶待测,同法处理空白溶液1份。用M3100原子
In order to explore the contents of various kinds of macronutrients and trace elements in grain, we investigated 11 kinds of macronutrients and trace elements in 26 kinds of raw grain in Tai’an city. Sample source and processing Tairin farmers market to buy 26 kinds of new raw food (including peanuts, sesame seeds). The sample was placed in a constant temperature oven, dried at 105 ℃ temperature to constant weight, cooled to room temperature, with 1 / 10,000 electronic balance accurately weighed about 2g (quasi-fourth decimal places) were placed Pressure digester, add 12ml mixed acid (perchloric acid: nitric acid is 1: 4), and then slowly heated to 140 ° C in an incubator, heated for 3 ~ 4h, after cooling, the digestion was transferred to a 50ml capacity Bottles, with double distilled water to be measured, the same method to deal with a blank solution. Use M3100 atoms