請參考 Mardel CopperSafe 銅藥的說明
(One dose lasts for one month. 4 oz doses 100 gallons)
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CopperSafe, when used as directed, maintains a total copper level of 1.5 ppm to 2.0 ppm in the water. CopperSafe remains active for over one month in the aquarium. Levels of 0.3 ppm free copper are recommended in the literature for therapeutic use, but with Coppersafe, the levels of free copper will be measured at 1.5 ppm to 2.0 ppm. This level of copper can be used in the treatment of fish due to Coppersafe's unique chelating agent. The chelating agent binds with the copper making it nontoxic to fish but effective against parasites
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A chelated or total copper test kit is required to measure CopperSafe. Coppersafe may cause inaccurate free copper readings when using certain test kits. All readings should be based on the total copper or chelated copper results and not the free copper results.
不同的銅試劑,測得的結果可能不同。
salifert可以準確地測出水中含有的銅離子濃度,不知道哪種試劑 可以測total copper?
能符合 based on the total copper or chelated copper results and not the free copper results
因為外行,請先進指導
市面上的銅離子測試劑,並非只測到free copper,其實包含了一部份的chelated copper
http://www.ph84.idv.tw/vbb/showthread.php?t=190981
要瞭解copper test的chelate agent,及銅藥的chelate agent
才有辦法作判斷
螯合銅也有部分解離為free copper,因此測得到,不一定測到total copper
說實話,這我也很煩惱,所以後來乾脆只用硫酸銅
我並非分析專長,剛好認識一些有分析背景的朋友
給的建議也許不見得完全正確
要測total copper
1. AAS(原子吸收光譜)
2. ICP-MS(感應耦合電漿質譜分析儀)
3. 前處理(例如消化反應,將螯合劑消滅)
不過以上不是儀器很貴,就是費時
請問我們說Cu離子濃度不要超過0.6ppm,此處 是指包含 free copper 以及 螯合銅所抓住的銅離子 二種的總濃度嗎?
這可能要請赤子大幫你解答
不過根據我的瞭解,不同的螯合劑,所產生的螯合銅毒性也不同
以水溶解的硫酸銅是藍色的清澈溶液,一加入海水中馬上變成霧狀物,此時銅離子大部分已經變成分子狀態,所以檢測數值比預期會低很多。
不太懂分子狀態是什麼意思,是指CuCO3嗎???