入世以来，农产品出口不断受到“绿色贸易壁垒”的困扰，水果及其制品的出口也不例外。

Since Chinas access to WTO, our farm products are frequently frustrated by green technical barriers in export trade, with fruit and its produce included.

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桑葚干是目前水果及其制品中含天然铁最丰富的，每100克含铁42.5毫克，无愧于水果中“补血果”的称号。

Dry is the fruit and mulberries products contains natural iron the most abundant, every 100 grams of iron 42.5 mg, is worthy of fruit "blood" fruit of the title.

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结论：该方法操作较简单，灵敏度高，速度快，干扰少，结果准确，适用于蔬菜、水果及其制品中亚硝酸盐与硝酸盐的同时测定。

Conclusion: the method is simple, sensitive, rapid, practical, accurate and which is suitable for the determination of nitrite and nitrate in vegetables, fruits and derived products.

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