0188-4999
0188-4999
S0188-49992019000400931
10.20937/rica.2019.35.04.12
Ecuador
00
00
2019
00
00
2019
35
4
931
943
[
1990
22
9
9
963-74
]
[
2015
73
277-90
]
[
APHA/AWWA/WEF
2012
22a
1496
]
[
2015
87
826-38
]
[
2014
2
1
1
557-72
]
[
2008
151
2-3
2-3
578-84
]
[
2008
19
3
3
260-5
]
[
2006
8
7
7
1137-44
]
[
2000
3
1
1
3-8
]
[
1997
13
]
[
2014
1
3
3
163-73
]
[
2014
61
232-42
]
[
2000
88
29
29
106S-16S
]
[
2002
36
4
4
1034-42
]
[
2018
143
334-45
]
[
2004
8
3-4
3-4
501-51
]
[
2002
46
6
6
913-22
]
[
2014
70
193-204
]
[
2012
121
]
[
2016
104
]
[
2010
61
1
1
95-110
]
[
1999
33
11
11
2561-8
]
[
2013
47
2
2
833-40
]
[
2010
18
4
4
105-9
]
[
2010
53
17-18
17-18
3405-13
]
[
2009
26
4
4
849-59
]
[
2003
293
]
[
MAE
2015
]
[
NMKL
2015
]
[
2000
36
10
10
367-70
]
[
2014
3a
728
]
[
2006
36
1
1
1-84
]
[
2012
37
1-3
1-3
108-13
]
[
2012
86
11
11
3260-7
]
[
2012
4a
616
]
[
2009
19
2
2
135-42
]
[
2008
72
4
4
537-42
]
[
USEPA
1972
594
]
[
2015
17
1
1
41-53
]
[
2009
311
1-2
1-2
29-35
]
[
2016
90
286-93
]