The purpose of this paper is to cloud point extraction technology and UV - visible spectrophotometry combined to establish the actual samples of trace amounts of copper ion of the new method.
本论文的目的是将浊点萃取技术与紫外—可见分光光度法联用，建立实际样品中痕量铜离子测定的新方法。
These foods also provide generous amounts of 'trace' or 'minor' minerals like selenium, magnesium, copper#, and zinc#, which are under-consumed in today's over-processed #diets.
它们也提供大量的如如硒、镁、铜、锌这样的微量元素，当今过度加工的饮食中缺乏这些微量元素。
The composite starch is rich in active calcium, zinc, copper, ferrite and other trace amounts, effectively improves the nutrient components of starch and is beneficial to the absorption by human body.
本发明所制备的复合淀粉富含活性钙、锌、铜、铁等微量，有效地提高了淀粉的营养成分，有利于人体吸收。
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