impurity content的用法和樣例：
例句
- Magnesium-hydroxide powder features high purity, well distributed particle size, extremely low in impurity.
氫氧化鎂純度高，顆粒均勻，重金屬等雜質含量低，可在多個領域廣泛應用。 - This method can only be applied to roughly test impurity content of test samples due to relatively big deviation produced by peak area normalization method.
由於峰面積歸一化法測定誤差大，因此，本法通常只能用於粗略考察供試品中的雜質含量。
