ADA黑土 NO2爆升觀察 - 水族
By Todd Johnson
at 2011-11-04T14:02
at 2011-11-04T14:02
Table of Contents
推 jackyu :說不定是因為...你的水不夠酸,棋盤鯛才沒事 11/04 11:16
推 yinsh :我的缸子在第二周暴一次 第四周又暴一次 11/04 11:37
→ denir :我 pH 5...但NO2的毒性是越酸越強嗎? 11/04 11:45
→ denir :我以為是NO2是pH越高,毒性越強.... 11/04 11:46
推 jackyu :是啊, NO2越酸越強....那說不定那隻鯛是神鯛 11/04 11:55
→ jackyu :要好好珍惜~~ 11/04 11:56
→ denir :傑克大,我看過的資料都是越鹼的環境,NO2毒性越高 11/04 12:49
→ denir :想請問~不知道你這樣說法的出處是來自哪裡..? 11/04 12:50
→ denir :剛剛看了學術資料,發現~的確是越酸~NO2的影響越大 11/04 13:36
→ denir :但我不知怎麼貼上那份資料,先在推文裡澄清 11/04 13:37
→ denir :一些水族論壇上:NO2是pH越高,毒性越強))應是以訛傳訛 11/04 13:37
→ denir :原來我養的是神鯛...等會幫他加菜...安慰她一下~ 11/04 13:38
推 starlkj :是不是越鹼的環境,NO3毒性越高? 好像有看過這講法 11/04 13:49
→ starlkj :no2不管什麼酸鹼,應該都很毒... 11/04 13:49
幫丹丹補完
以下出自"柯清水 1998 年 9 月 水產養殖的致病根源--亞硝酸鹽 養魚世界 P24 "
『雖然亞硝酸鹽的毒性遠低於氨,但是這並不表示它的危險比氨低。
例如:在酸性的水質中,亞硝酸鹽的危險性就比氨高,為什麼?
因為在酸性的水質中有毒性的氨分子幾乎已經全部變成無毒性的銨離子了。
因此它的毒性就會因此而消失;
反之,亞硝酸鹽的毒性則不受 pH 值變化之影響而有明顯的改變,
所以在酸性的水質中亞硝酸鹽的危險性比氨還要高。』
我想出問題是出在這句話
這句話本來是要與"氨<=>銨"比較的
pH 鹼<=>酸
單獨拿來說"NO2-在酸性水裡比較危險" 是有毛病的~~
至於NO2-在酸裡還是鹼裡哪個毒...
翻了幾篇論文都只有說:毒!
而且無論酸鹼(水族領域) 皆是以NO2-(亞硝酸根)形式存在水體
沒有NH3 <=> NH4+ 的問題...
回歸原點
無論哪個毒性強
硝化系統養好 NO2歸零在放魚吧~~
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All Comments
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