qualidade de água dos rios vacacaí e vacacaí-mirim no estado do rio grande do sul, brasil water quality of the vacacaí and vacacaí-mirim rivers in the rio grande do sul state, brazil
جودة مياه نهري فاكاكاي وفاكاكاي-ميريم في ولاية ريو غراندي دو سول، البرازيل
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Abstract
Water is an important natural resource for preserving the life in the planet. In this survey, it was evaluated water quality in the Vacacaí and Vacacaí-Mirim basins in Rio Grande do Sul State, Brazil. The water samples were evaluated for N-nitrate (N-NO3), phosphorus (P), potassium (K) and sodium (Na), pH and electric conductivity (EC). The results were compared to the values suggested by the resolutions of the State Environmental Agency (Secretaria da Saúde e Meio Ambiente), the Brazilian Agencies (CONAMA e Ministério da Saúde) and the United States Environmental Protection Agency (EPA). The water pH varied between 5.71 and 7.5 and de EC between 33.33 and 118.88µS cm-1. For N-nitrate 100% samples were in the settled limits by environmental legislation. The P levels were between 0.00 to 0.18mg L-1. The N-ammonia levels varied between 0.02 and 0.39mg L-1, the K levels remained between 2.05 and 3.66mg L-1 and the Na levels between 1.84 and 16.8mg L-1.
تُعد المياه مورداً طبيعياً مهماً للحفاظ على الحياة فوق كوكب الأرض. في هذا المسح، جرى تقييم جودة المياه في حوضي فاكاكاي وفاكاكاي-ميريم في ولاية ريو غراندي دو سول، البرازيل. خضعت عينات المياه للتقييم من حيث نيتروجين النترات (N-NO3)، والفسفور (P)، والبوتاسيوم (K)، والصوديوم (Na)، والرقم الهيدروجيني (pH)، والناقلية الكهربائية (EC). وقُورنت النتائج بالقيم المقترحة وفقاً لقرارات الوكالة البيئية بالولاية (أمانة الصحة والبيئة)، والوكالات البرازيلية (CONAMA ووزارة الصحة)، ووكالة حماية البيئة الأمريكية (EPA). تراوح الرقم الهيدروجيني للمياه بين 5.71 و7.5، والناقلية الكهربائية بين 33.33 و118.88µS cm-1. وبالنسبة لنيتروجين النترات، كانت 100% من العينات ضمن الحدود المحددة بالتشريعات البيئية. تراوحت مستويات الفسفور بين 0.00 و0.18mg L-1، بينما تراوحت مستويات نيتروجين الأمونيا بين 0.02 و0.39mg L-1، وظلت مستويات البوتاسيوم بين 2.05 و3.66mg L-1، ومستويات الصوديوم بين 1.84 و16.8mg L-1.
| Reference Key |
marchesan2009cinciaqualidade
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| Authors | ;Enio Marchesan;Gerson Meneghetti Sarzi Sartori;Geovane Boschmann Reimche;Luis Antonio de Avila;Renato Zanella;Sérgio Luiz de Oliveira Machado;Vera Regina Mussoi Macedo;Juliana Pivetta Cogo |
| Journal | Trials |
| Year | 2009 |
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