Measurement of un-ionized ammonia in complex mixtures

被引:20
|
作者
Hafner, SD [1 ]
Bisogni, JJ
Jewell, WJ
机构
[1] Cornell Univ, Dept Biol & Environm Engn, Ithaca, NY 14853 USA
[2] Cornell Univ, Dept Civil & Environm Engn, Ithaca, NY 14853 USA
关键词
D O I
10.1021/es051638j
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The toxicity of un-ionized ammonia, NH3 (aq), in anaerobic digestion of high-nitrogen wastes has been researched extensively. Previous estimates of NH3 (aq) concentration have relied on a simple speciation approach, based only on the acid dissociation constant and the sample pH and total ammonia concentration. The distinction between concentration and chemical activity has generally not been made, despite the potential for resulting errors in the calculation of NH3 (aq) concentration, and the greater applicability of activity to toxicity work. The currently accepted approach for estimating NH3 (aq) concentration is based on assumptions that are not valid in digested animal manure or other concentrated wastes. This work presents an approach for directly measuring NH3 (aq) activity in complex mixtures using gaseous/aqueous equilibrium across microporous tubing. Application of this approach to anaerobic digester samples confirms that the currently accepted approach is not accurate; it overestimated NH3 (aq) activity in unaltered samples by 45-200%. Previous work on the toxicity of ammonia to methanogenesis has probably overestimated the tolerance of consortia to NH3 (aq), due to overestimation of concentrations. The method introduced here is expected to be useful in a range of research on ammonia toxicity and volatilization.
引用
收藏
页码:1597 / 1602
页数:6
相关论文
共 50 条
  • [41] Water quality criteria of total ammonia nitrogen (TAN) and un-ionized ammonia (NH3-N) and their ecological risk in the Liao River, China
    Wang, Xiaonan
    Li, Ji
    Chen, Jin
    Cui, Liang
    Li, Wenwen
    Gao, Xiangyun
    Liu, Zhengtao
    CHEMOSPHERE, 2020, 243
  • [42] INTESTINAL-ABSORPTION OF ACIDIC BETA-LACTAM ANTIBIOTICS - CONTRIBUTION OF IONIZED AND UN-IONIZED FORMS
    PRIETO, JG
    SANTOS, L
    BARRIO, JP
    ALONSO, ML
    JOURNAL OF PHARMACEUTICAL SCIENCES, 1987, 76 (08) : 596 - 598
  • [43] INTERACTIONS OF UN-IONIZED FLUORESCEIN .1. COLOR DISCHARGE BY SOLVENTS AND COLLOIDS
    NASH, T
    JOURNAL OF PHYSICAL CHEMISTRY, 1959, 62 (12): : 1574 - 1578
  • [44] A toxicity bioassay study concerning the effect of un-ionized ammonia on the mucus cells response originating from the gills of zebrafish Danio rerio
    Al-Zaidan, Abdullah Salim
    Endo, Makoto
    Maita, Masashi
    Goncalves, Ana Teresa
    Futami, Kunihiko
    Katagiri, Takayuki
    FISHERIES SCIENCE, 2013, 79 (01) : 129 - 142
  • [45] A toxicity bioassay study concerning the effect of un-ionized ammonia on the mucus cells response originating from the gills of zebrafish Danio rerio
    Abdullah Salim Al-Zaidan
    Makoto Endo
    Masashi Maita
    Ana Teresa Gonçalves
    Kunihiko Futami
    Takayuki Katagiri
    Fisheries Science, 2013, 79 : 129 - 142
  • [46] Acute and chronic un-ionized ammonia toxicity to 'all-fish' growth hormone transgenic common carp (Cyprinus carpio L.)
    Guan Bo
    Hu Wei
    Zhang TangLin
    Duan Ming
    Li DeLiang
    Wang YaPing
    Zhu ZuoYan
    CHINESE SCIENCE BULLETIN, 2010, 55 (35): : 4032 - 4036
  • [47] SINGLET OXYGEN PHOTOGENERATION BY IONIZED AND UN-IONIZED DERIVATIVES OF ROSE-BENGAL AND EOSIN Y IN DILUTED SOLUTIONS
    AMATGUERRI, F
    LOPEZGONZALEZ, MMC
    MARTINEZUTRILLA, R
    SASTRE, R
    JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 1990, 53 (02) : 199 - 210
  • [48] CHARGE EXCHANGE ATTRACTION BETWEEN PRIMARY IONS AND UN-IONIZED MOLECULES IN RADIATION CHEMISTRY
    KEVAN, L
    LIBBY, WF
    SCIENCE, 1963, 140 (356) : 382 - &
  • [49] Dose-dependent effect of un-ionized ammonia on hatching success of fertilized eggs of silver carp Hypophthalmichthys molitrix and bighead carp Hypophthalmichthys nobilis
    Chen, Yafen
    Li, Jiajia
    Sun, Hongjie
    Yang, Zhou
    JOURNAL OF FRESHWATER ECOLOGY, 2013, 28 (01) : 39 - 46
  • [50] HISTOPATHOLOGY OF RAINBOW-TROUT, SALMO-GAIRDNERI RICHARDSON, EXPOSED TO DIURNALLY FLUCTUATING UN-IONIZED AMMONIA LEVELS IN STATIC-WATER PONDS
    SODERBERG, RW
    JOURNAL OF FISH DISEASES, 1985, 8 (01) : 57 - 64