ACS Division of Environmental Chemistry, Preprints

SJR

The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.

Year	SJR
1999	0.171
2000	0.224
2001	0.130
2002	0.156
2003	0.145
2004	0.107
2005	0.104
2006	0.100
2007	0.104

Total Documents

Evolution of the number of published documents. All types of documents are considered, including citable and non citable documents.

Year	Documents
1999	86
2000	473
2001	120
2002	58
2003	64
2004	70
2005	0
2006	0
2007	0

Citations per document

This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.

Cites per document	Year	Value
Cites / Doc. (4 years)	1999	0.091
Cites / Doc. (4 years)	2000	0.151
Cites / Doc. (4 years)	2001	0.069
Cites / Doc. (4 years)	2002	0.087
Cites / Doc. (4 years)	2003	0.062
Cites / Doc. (4 years)	2004	0.049
Cites / Doc. (4 years)	2005	0.019
Cites / Doc. (4 years)	2006	0.016
Cites / Doc. (4 years)	2007	0.015
Cites / Doc. (3 years)	1999	0.091
Cites / Doc. (3 years)	2000	0.204
Cites / Doc. (3 years)	2001	0.056
Cites / Doc. (3 years)	2002	0.091
Cites / Doc. (3 years)	2003	0.065
Cites / Doc. (3 years)	2004	0.025
Cites / Doc. (3 years)	2005	0.016
Cites / Doc. (3 years)	2006	0.015
Cites / Doc. (3 years)	2007	0.014
Cites / Doc. (2 years)	1999	0.115
Cites / Doc. (2 years)	2000	0.170
Cites / Doc. (2 years)	2001	0.059
Cites / Doc. (2 years)	2002	0.083
Cites / Doc. (2 years)	2003	0.039
Cites / Doc. (2 years)	2004	0.041
Cites / Doc. (2 years)	2005	0.022
Cites / Doc. (2 years)	2006	0.014
Cites / Doc. (2 years)	2007	0.000

Total Cites

Self-Cites

Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years.
Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.

Cites	Year	Value
Self Cites	1999	2
Self Cites	2000	9
Self Cites	2001	2
Self Cites	2002	1
Self Cites	2003	0
Self Cites	2004	0
Self Cites	2005	0
Self Cites	2006	0
Self Cites	2007	0
Total Cites	1999	48
Total Cites	2000	92
Total Cites	2001	37
Total Cites	2002	62
Total Cites	2003	42
Total Cites	2004	6
Total Cites	2005	3
Total Cites	2006	2
Total Cites	2007	1

External Cites per Doc

Cites per Doc

Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years. External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents.

Cites	Year	Value
External Cites per document	1999	0.087
External Cites per document	2000	0.184
External Cites per document	2001	0.053
External Cites per document	2002	0.090
External Cites per document	2003	0.065
External Cites per document	2004	0.025
External Cites per document	2005	0.016
External Cites per document	2006	0.015
External Cites per document	2007	0.014
Cites per document	1999	0.091
Cites per document	2000	0.204
Cites per document	2001	0.056
Cites per document	2002	0.091
Cites per document	2003	0.065
Cites per document	2004	0.025
Cites per document	2005	0.016
Cites per document	2006	0.015
Cites per document	2007	0.014

% International Collaboration

International Collaboration accounts for the articles that have been produced by researchers from several countries. The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address.

Year	International Collaboration
1999	6.98
2000	8.03
2001	10.00
2002	5.17
2003	6.25
2004	4.29
2005	0
2006	0
2007	0

Citable documents

Non-citable documents

Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.

Documents	Year	Value
Non-citable documents	1999	0
Non-citable documents	2000	0
Non-citable documents	2001	89
Non-citable documents	2002	91
Non-citable documents	2003	91
Non-citable documents	2004	2
Non-citable documents	2005	0
Non-citable documents	2006	0
Non-citable documents	2007	0
Citable documents	1999	528
Citable documents	2000	451
Citable documents	2001	572
Citable documents	2002	588
Citable documents	2003	560
Citable documents	2004	240
Citable documents	2005	192
Citable documents	2006	134
Citable documents	2007	70

Cited documents

Uncited documents

Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. those not cited during the following year.

Documents	Year	Value
Uncited documents	1999	494
Uncited documents	2000	399
Uncited documents	2001	628
Uncited documents	2002	631
Uncited documents	2003	616
Uncited documents	2004	238
Uncited documents	2005	189
Uncited documents	2006	132
Uncited documents	2007	69
Cited documents	1999	34
Cited documents	2000	52
Cited documents	2001	33
Cited documents	2002	48
Cited documents	2003	35
Cited documents	2004	4
Cited documents	2005	3
Cited documents	2006	2
Cited documents	2007	1