Concepto |
Unidades |
1990 |
1995 |
2000 |
2006 |
2007 |
2008 |
2009 |
2010 |
2011 |
2012 |
2013 |
Estación de medición |
Nombre |
|
Puente Viejo Matamoros |
Puente Viejo Matamoros |
Puente Viejo Matamoros |
Puente Viejo Matamoros |
Puente Viejo Matamoros |
Puente Viejo Matamoros |
Puente Viejo Matamoros |
Puente Viejo Matamoros |
Puente Viejo Matamoros |
Puente Viejo Matamoros |
Puente Viejo Matamoros |
Distancia a la desembocadura |
km |
58 |
58 |
58 |
58 |
58 |
58 |
58 |
58 |
58 |
58 |
58 |
Frecuencia
de muestreo anual |
Número |
12 |
5 |
6 |
3 |
3 |
3 |
3 |
4 |
6 |
3 |
6 |
Parámetros (promedio anual) |
Temperatura |
°C |
23.8 |
22.2 |
26.5 |
30.5 |
26.5 |
28.3 |
25.3 |
24.1 |
24.45 |
25.77 |
27.08 |
Acidez |
pH |
7.60 |
8.30 |
nd |
7.94 |
7.76 |
7.94 |
8.03 |
7.97 |
8 |
8.50 |
8.26 |
Oxígeno
disuelto |
mg O2 / l |
7.04 |
9.56 |
7.16 |
7.33 |
7 |
7.67 |
7.67 |
7.67 |
7 |
8.83 |
8.93 |
Saturación
de oxígeno |
% |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
108.75 |
108.92 |
DBO (20°C
5d) |
mg O2/ l |
3.55 |
3.14 |
2.24 |
3.65 |
3.53 |
3.87 |
3.59 |
8.3 |
8.6 |
8.92 |
5.27 |
DQO (K2Cr2O7) |
mg O2/ l |
nd |
nd |
nd |
nd |
11.67 |
20.63 |
15.67 |
18.24 |
18.48 |
129.1 |
125.93 |
Sólidos
suspendidos |
mg/ l |
nd |
nd |
nd |
nd |
24.67 |
38.67 |
13.33 |
65 |
51.5 |
54.5 |
218.8 |
Sólidos
disueltos |
mg/ l |
nd |
nd |
nd |
nd |
825.33 |
1,072.67 |
836.67 |
986.67 |
895 |
712.6 |
950.33 |
Nitrógeno
total |
mg N/ l |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
1.47 |
1.4 |
Nitratos |
mg NO3/ l |
0.17 |
0.15 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
1.42 |
0.25 |
Amonio |
mg NH4/ l |
0.6 |
0.07 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
<0.2 |
0.1 |
Fósforo
total |
mg P/ l |
nd |
nd |
nd |
0.397 |
nd |
nd |
0.24 |
0.38 |
<0.300 |
0.782 |
0.084 |
Ortofosfatos |
mg P/ l |
nd |
0.7 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
<0.0005 |
0.021 |
Coliformes
fecales |
NMP/100 ml |
nd |
1.1 E3 |
nd |
nd |
26 |
280 |
291 |
1,228 |
1,109 |
125 |
382 |
Arsénico
total |
mg As/ l |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
<0.00139 |
<0.00139 |
Cadmio
total |
mg Cd/ l |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
<0.00015 |
<0.00015 |
Cromo
total |
mg Cr/ l |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
<0.00031 |
<0.0060 |
Cobre
total |
mg Cu/ l |
nd |
nd |
nd |
<0.04 |
<0.05 |
<0.05 |
<0.05 |
<0.050 |
<0.050 |
nd |
nd |
Plomo
total |
mg Pb/ l |
nd |
nd |
nd |
0.23 |
nd |
nd |
nd |
nd |
nd |
<0.00154 |
<0.00154 |
Mercurio
total |
mg Hg/ l |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
<0.00005 |
0.001 |
Níquel
total |
mg Ni/ l |
nd |
nd |
nd |
nd |
<0.121 |
<0.121 |
<0.121 |
<0.121 |
<0.121 |
<0.00015 |
<0.00015 |
Zinc
total |
mg Zn/ l |
nd |
nd |
nd |
nd |
0.09 |
<0.050 |
<0.050 |
<0.050 |
<0.050 |
nd |
nd |
Notas: |
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Ubicación
geográfica de la estación de medición: 25º 53´ 00" lat. N; 97º 30´
30" long. W. |
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nd. No disponible |
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Fuente: |
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Comisión Nacional del Agua, Gerencia de
Calidad del Agua, Febrero 2015 |
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