phthalic acid Henkel method

例句：

1. 1. The Henkel method is used to analyze the chemical composition of materials.
   亨克尔法用于分析材料的成分。
2. 2.The Henkel method has been proven to be more accurate than other methods for this type of analysis.
   亨克尔法在这类分析中比其他方法更精确。
3. 3.The Henkel method is widely used in the chemical industry for its efficiency and reliability.
   亨克尔法在化学工业中广泛使用，因其效率和可靠性而受到青睐。