什么是EDTA產品？

What is EDTA product?

EDTA是乙二胺四乙酸的縮寫。這是一種強有機酸。EDTA及其鹽通常以晶體或白色粉末的形式，不易揮發，在水中具有高度溶解性。養殖戶常用它來處理重金屬，降低育苗場或者養蝦場的水硬度。

EDTA is the abbreviation for ethylenediaminetetraacetic acid. This is a strong organic acid. EDTA and its salts are usually in the form of crystals or white powders, are not volatile and have high solubility in water. Farmers often use it to treat heavy metals and reduce the water hardness in seedling or shrimp farms.

1、EDTA的化學式

1. The chemical formula of EDTA

EDTA的化學式為C10H16N2O8，大約20年前，EDTA產品已經應用于許多領域。

The chemical formula of EDTA is C10H16N2O8. About 20 years ago, EDTA products were already used in many fields.

在工業中，EDTA被用作清潔劑，用于水，也用于紙張漂白的過程。

In industry, EDTA is used as a cleaning agent, for water disinfection, and also for the process of paper bleaching.

在農業生產，EDTA也有助于增加植物的營養。

In agricultural production, EDTA also helps to increase plant nutrition.

在美容領域，Edta在化妝品中也被發現，以保持產品的質量，并確保沒有營養物質丟失。

In the field of beauty, Edta has also been found in cosmetics to maintain product quality and ensure that no nutrients are lost.

2、EDTA主要在哪個行業應用？

2. Which industry is EDTA mainly applied in?

EDTA可以大量行業，33%的洗滌劑行業，13%的造紙行業，18%的水體處理和其他行業。在水產養殖中，EDTA用于減少水體的硬度。

EDTA can be used in a large number of industries, including 33% in detergent industry, 13% in paper industry, 18% in water treatment and other industries. In aquaculture, EDTA is used to reduce the hardness of water bodies.

3、EDTA產品特性

3. EDTA Product Features

EDTA的特性是按照1：1的比例與金屬形成絡合物，與金屬形成絡合物的能力取決于水的pH值。如：Ca2+和Mg2+，需要大約10的pH值（sinax，2011年）。與金屬形成絡合物的能力也取決于絡合的常數，這個常數越高，絡合的可能性就越大。對于鉛（Pb），K常數=1018。但對于Ca2+K~108。雖然sinax（2011）研究顯示，如果水體中有大量Ca2+，Pb2+會與Ca2+競爭。

The characteristic of EDTA is to form complexes with metals in a 1:1 ratio, and its ability to form complexes with metals depends on the pH value of water. For example, Ca2+and Mg2+, a pH value of approximately 10 is required (sinax, 2011). The ability to form complexes with metals also depends on the constant of complexation, and the higher this constant, the greater the likelihood of complexation. For lead (Pb), the K constant is 1018. But for Ca2+K~108. Although sinax (2011) showed that if there is a large amount of Ca2+in water, Pb2+will compete with Ca2+.

EDTA遷移到土壤中，與微量金屬和堿性金屬（Na+、K+、Ca2+等）絡合，然后增加金屬的溶解度。特別是在酸性土壤中，EDTA降低了Fe3+的活性。在堿性環境中，EDTA主要與Ca2+和Mg2+組成，形成CAMgEDTA（EPA，2004），從而降低水的硬度。

EDTA migrates to the soil, complexes with trace metals and alkaline metals (Na+, K+, Ca2+, etc.), and then increases the solubility of the metals. Especially in acidic soils, EDTA reduces the activity of Fe3+. In alkaline environments, EDTA is mainly composed of Ca2+and Mg2+, forming CAMgEDTA (EPA, 2004), thereby reducing the hardness of water.

另一個注意事項是，EDTA分子中有10%的氮，所以使用EDTA，你可以幫助在環境中添加更多的氮，以刺激藻類的生長。

Another note is that EDTA molecules contain 10% nitrogen, so using EDTA can help add more nitrogen to the environment to stimulate the growth of algae.

另一方面，根據SiLLanpaa（1997）的研究顯示，Ca3（PO4）2和FePO4通常是不溶于水，使水體損失大量的PO43，它限制藻類的生長，使環境難以形成水色。當使用EDTA時，它與Ca和Fe復合，以水溶性的形式釋放PO43，從而刺激藻類的生長（Oviedo和Rodriguez，2003）。更多相關事項就來我們網站http://www.shrisa.cn咨詢！

On the other hand, according to SiLLanpaa's (1997) research, Ca3 (PO4) 2 and FePO4 are usually insoluble in water, causing a significant loss of PO43 in the water, which limits the growth of algae and makes it difficult for the environment to form water color. When using EDTA, it combines with Ca and Fe to release PO43 in a water-soluble form, thereby stimulating the growth of algae (Oviedo and Rodriguez, 2003). For more related matters, come to our website http://www.shrisa.cn consulting service