File:Al hydrolysis.svg

#/usr/bin/python

from numpy import loadtxt
from matplotlib import pyplot as plt

if __name__=="main":
	X = loadtxt("data.txt", skiprows=16)

	fig, ax = plt.subplots(1,1,figsize=(15,10))

	ph = X[:,4]
	Al = X[1,1]
	Al1 = X[:,5] * 100. / Al
	Al2 = X[:,6] * 100. / Al
	Al3 = X[:,7] * 100. / Al
	Al4 = X[:,8] * 100. / Al
	Al5 = X[:,10] * 13 * 100. / Al
	Al6 = X[:,3] * 100. / Al
	Al7 = X[:,12] * 100. / Al

	ax.plot(ph, Al1, linewidth=2, label=r"Al(OH)${}^{2+}$")
	ax.plot(ph, Al2, linewidth=2, label=r"Al(OH)${}_2^+$")
	ax.plot(ph, Al3, linewidth=2, label=r"Al(OH)${}_3$")
	ax.plot(ph, Al4, linewidth=2, label=r"Al(OH)${}_4^-$")
	ax.plot(ph, Al5, linewidth=2, label=r"Al${}_{13}$(OH)${}_{32}^{7+}$")
	ax.plot(ph, Al6, linewidth=2, label=r"Al${}^{3+}$")
	ax.plot(ph, Al7, linewidth=2, label=r"Al(OH)${}_3$(s)")

	ax.set_ylim([0,100])
	ax.grid(True)
	ax.legend(frameon=False, ncol=3, loc=9)
	ax.minorticks_on()
	ax.set_ylabel("% formation relative to Al")
	ax.set_xlabel("pH")

	fig.savefig("Al hydrolysis.svg",bbox_inches="tight", pad_inches=.15)