The physical chemical properties of high purity quartz are stable, with low impurity content difficult to dissolve. In the process of digestion dissolution of high purity quartz samples, the basic factors involved are sample weight, reagent combination, reagent dosage, reagent purity so on.

(1) High-purity quartz ICP detection technology includes sample preparation instrumental detection, the key technology is sample digestion ore dissolution preparation.

The results show that the sample weight, reagent combination, reagent dosage reagent purity used in the process of sample preparation have an important influence on the results of ICP detection.

(2) The optimum conditions for preparation of sample digestion ore dissolution are as follows: the dosage of high-purity quartz ≥2000mg; The purity of the reagent was high purity grade (MOS BV-III), the reagent combination was HF+HNO3. Concentrated HNO3 was divided into 3 times the total dosage was ≥5mL. HF dosage is 25mL.

(3) According to the processing characteristics purity requirements of high purity quartz sand, steel sieve can be used in the whole sample preparation process, in order to avoid iron pollution.

In addition, the preparation of high purity quartz sample digestion ore dissolution under ultra-clean laboratory conditions is beneficial to avoid air impurity pollution reduce detection errors.

At present, the high purity quartz technology in China has made some progress, which is mainly marked by the initial mass production capacity of 4N high purity quartz mid-end products, the basic mastery of high purity quartz quality testing technology. However, China does have the production capacity of 4N8 above high-end products, indicating that the gap with the international advanced level is still very large.

In order to change the relatively backward state of high purity quartz technology in China, scientific research forces should be mobilized organized at the national level, the government, production, learning research should be combined to carry out the research of high purity quartz raw material selection technology, processing technology processing equipment technology, so as to provide technical support for the industrialization of high purity quartz high-end products in China.

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