ammFrac(wq)
ammFrac()所属R语言包:wq
Un-ionized ammonia
联合国离子氨
译者:生物统计家园网 机器人LoveR
描述----------Description----------
Calculates fraction of total ammonium in un-ionized form.
计算分数的总铵在联合国离子形式。
用法----------Usage----------
ammFrac(pH, t, S, pHscale = c('total', 'free'))
参数----------Arguments----------
参数:pH
pH value
pH值
参数:t
temperature, degrees Celsius
温度,摄氏度
参数:S
salinity, Practical Salinity Scale
盐度,实用盐标
参数:pHscale
scale of pH measurement
pH值的测量规模
Details
详细信息----------Details----------
The stoichiometric dissociation constant Ka* of the ammonium ion is estimated using the equations of Clegg and Whitfield (1995). There are separate equations for use with pH measurements made on the total and free scales. Equations should be valid in the range of 0 to 40 salinity and -2 to 40 C. Accuracy is probably better than 5% at all temperatures and salinities. The dissociation constant is then used to calculate the mole fraction from 1/(1+10^(-pH)/Ka*). If input vectors are not of the same length, shorter ones will be recycled as necessary without warning.
的化学计量的解离常数Ka*克莱格和威菲(1995)使用方程估计的铵离子。有单独与pH测量所作的总的和游离尺度用于方程。方程的应该是有效的范围为0~40的盐度和-2至40℃精度可能是优于5%在所有的温度和盐度。的解离常数,然后用于计算的摩尔分数由1/(1+10^(-pH)/Ka*)工业。如果输入矢量是不相同的长度,短的必要时不发出警告的情况下,将被回收利用。
值----------Value----------
Fraction of total ammonium occurring as un-ionized ammonium.
总铵的比例发生非离子氨氮。
注意----------Note----------
There are several approaches available to make these estimates, depending on the underlying theory, experimental data and fitting methods. See package seacarb for an algorithm based on the work of Millero (1995), which includes pressure (and thus depth) corrections.
有几种方法可以使这些估计,根据基本理论,实验数据和拟合方法。见包装seacarb的工作的Millero(1995年),其中包括压力(因此深度)修正算法。
参考文献----------References----------
实例----------Examples----------
## Examine different combinations of environmental variables:[#检查环境变量的不同组合:]
ph = c(8, 8, 8, 7.8)
temp = c(10 , 25, 25, 25)
sal = c(0, 0, 35, 35)
round(ammFrac(ph, temp, sal), 4) # 0.0183 0.0539 0.0556 0.0358[0.0183 0.0539 0.0556 0.0358]
round(ammFrac(ph, temp, sal, 'free'), 4) # 0.0183 0.0539 0.0440 0.0282[0.0183 0.0539 0.0440 0.0282]
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注:
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