意味と使い方

The method provides a non-destructive method for the determination of sulfur content in cellulosic materials. Sulfur can be in the form of sulfate, which can cause thermal instability. Sulfur can also be present as a salt that can cause fog in solution.

ステップ 1: 範囲

1.1 The test method includes the determination of the sulphur content of cellulosic materials by X-ray fluorescence.

1.2 Using appropriate standards, the procedure ranges from about 10 ppm to 20% sulfur.

1.3 This test method is specifically designed as an alternative to test method D871, sections on procedures and calculations for importance and use, device, reagent, hydroxyl content, and test method D817, an overview of test method, importance and use, device, reagent, and procedure for hydroxyl content. When applied to cellulose esters, it measures the combination of sulfur and sulfur in the accompanying inorganic salts.

ASTM D2929-2011 蛍光 X 線によるセルロース材料中の硫黄含有量の測定のための標準試験方法

1.4 In order to determine the incorporated sulfur, the sample is first reprecipitated into dilute acid to remove the unbound sulfur compounds when soluble.

1.5 SI 単位で表される値は標準とみなされます。. 括弧内の値は参考値です。.

1.6 この規格は、すべての安全上の懸念に対処することを目的としたものではありません (もしあれば) その使用に関連する. 適切な安全衛生慣行を確立し、使用前に規制上の制限の適用可能性を判断することは、この規格のユーザーの責任です。. 特定の危険性の説明については、, 見る 7.2.1.