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INTERNATIONAL JOURNAL OF LATEST TECHNOLOGY IN ENGINEERING,
MANAGEMENT & APPLIED SCIENCE (IJLTEMAS)
ISSN 2278-2540 | DOI: 10.51583/IJLTEMAS | Volume XV, Issue II, February 2026
Blue Baby Syndrome: Nitrate Contamination in Water
Dr. Baby Mandal
PGT Teacher of Chemistry Department of School Education and Literacy CM SoE Girls’, Dumka,
Jharkhand
DOI: https://doi.org/10.51583/IJLTEMAS.2026.15020000079
Received: 26 February 2026; Accepted: 03 March 2026; Published: 19 March 2026
ABSTRACT
Blue Baby Syndrome, medically termed methemoglobinemia, is a clinical condition characterized by a bluish
discoloration of an infant’s skin due to reduced oxygen-carrying capacity of blood. The disorder may be
congenital or acquired. The acquired form is primarily associated with nitrate contamination in drinking water
and food. Infants below one year of age are particularly vulnerable. The present study focuses on nitrateinduced
methemoglobinemia in Pakur district, specifically in the Amrapara and Maheshpur blocks. Water samples
collected from selected mining areas were analyzed to determine nitrate concentration and assess associated
health risks. The findings indicate seasonal variations in nitrate levels, though values remain within permissible
limits. Continuous monitoring and public awareness are nevertheless essential to prevent health hazards.
Keywords: Blue Baby Syndrome, Methemoglobinemia, Nitrate Contamination, Cyanosis, Groundwater, Pakur
District
INTRODUCTION
Blue Baby Syndrome refers to a pathological condition in which infants develop a bluish coloration of the skin,
lips, and extremities, especially noticeable during crying. The condition occurs due to decreased oxygen supply
in the bloodstream. Medically known as methemoglobinemia, it results from the oxidation of hemoglobin into
methemoglobin, which is incapable of effectively transporting oxygen.
The disorder may be congenital, present at birth due to genetic abnormalities, or acquired, mainly through
ingestion of nitrate-contaminated water or food. Infants under 12 months are particularly susceptible because
their digestive systems facilitate the conversion of nitrate (NO₃⁻) to nitrite (NO₂⁻), which interferes with oxygen
transport. Additional risk factors include anemia, metabolic acidosis, milk protein intolerance, and urinary tract
infections.
This study primarily investigates nitrate contamination in groundwater sources of Pakur district, Jharkhand,
with emphasis on mining-influenced regions.
Causes of Blue Baby Syndrome:
Nitrate and nitrite concentrations in drinking water are regularly monitored due to their potential health hazards.
The maximum admissible concentration (MAC) for nitrate in drinking water is generally 50 mg/L, while lower
limits are recommended for infant safety.
Nitrate occurs naturally in small quantities in surface water but may accumulate in higher concentrations in
groundwater due to agricultural runoff, sewage disposal, and industrial activities. In infants below six months of
age, excessive nitrate intake can lead to methemoglobinemia.
Clinical symptoms of nitrate-induced methemoglobinemia include:
● Bluish discoloration of skin (cyanosis)
● Rapid heartbeat
INTERNATIONAL JOURNAL OF RESEARCH AND INNOVATION IN APPLIED SCIENCE (IJRIAS)
ISSN No. 2454-6194 | DOI: 10.51584/IJRIAS |Volume XI Issue II February2026
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● Shortness of breath
● Nausea and diarrhea
● Lethargy
● Loss of consciousness
● Seizures
In severe cases, oxygen deprivation may lead to fatal outcomes.
MATERIALS AND METHODS
Study Area
Water samples were collected from selected sites in Pakur district, including:
▪ Panem Coal Mines
▪ Udalbani Stone Chips Mines
▪ Dumkadanga Stone Chips Mines
These locations fall within the Amrapara and Maheshpur blocks and are influenced by mining activities.
Sample Collection
Samples were collected during pre-monsoon, monsoon, and post-monsoon seasons for the years 2017 and 2018.
Standard procedures recommended by APHA were followed. Doubly washed plastic bottles were used to prevent
contamination.
Analytical Procedure:
Nitrate was estimated using the Devarda’s alloy reduction method under strongly alkaline conditions. In this
method, nitrate and nitrite are reduced to ammonia (NH₃), which is distilled and quantified either
spectrophotometrically or titrimetrically.
Reaction involved:
3NO₃⁻ + 8Al + 5OH⁻ + 2H₂O → 8AlO₂⁻ + 3NH₃
The liberated ammonia was absorbed in standard sulfuric acid and analyzed:
Spectrophotometric measurement at 424 nm using Nessler’s reagent (valid for concentrations >0.5 ppm).
Titrimetric back-titration with 0.2N NaOH for higher concentrations (>5 ppm).
Conversion factor:
1 mL N H₂SO₄ = 0.06201 g NO₃⁻
RESULTS AND DISCUSSION
Seasonal analysis of nitrate concentration revealed the following trends:
Pre-Monsoon Season
● Panem Coal Mines: 2.2 – 2.3 mg/L
INTERNATIONAL JOURNAL OF RESEARCH AND INNOVATION IN APPLIED SCIENCE (IJRIAS)
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● Udalbani Stone Chips Mines: 1.2 – 2.7 mg/L
● Dumkadanga Stone Chips Mines: 2.1 – 2.3 mg/L
Monsoon Season
● Panem Coal Mines: 1.3 – 2.1 mg/L
● Udalbani Stone Chips Mines: 1.1 – 1.4 mg/L
● Dumkadanga Stone Chips Mines: 1.1 – 1.9 mg/L
Post-Monsoon Season
● Panem Coal Mines: 2.1 – 3.36 mg/L
● Udalbani Stone Chips Mines: 1.2 – 1.4 mg/L
● Dumkadanga Stone Chips Mines: 1.6 – 3.3 mg/L
Groundwater samples generally showed higher nitrate concentrations compared to surface water. The highest
values were observed during the post-monsoon season, possibly due to leaching and runoff effects.
Among the three sites, Panem Coal Mines recorded comparatively higher nitrate levels.
Although the observed concentrations remained within desirable limits, continuous exposure and seasonal
fluctuations warrant regular monitoring.
CONCLUSION
The nitrate concentration in groundwater sources of Pakur district is presently within permissible limits.
However, sustained vigilance is necessary due to the vulnerability of infants and pregnant women.
Mild cases of methemoglobinemia may resolve without intensive treatment, but severe cases require immediate
medical attention, including oxygen therapy or blood transfusion.
Preventive measures include:
● Regular testing of private wells and tube wells
● Avoiding nitrate-rich water for infants and pregnant women
● Monitoring groundwater quality in mining areas
● Public awareness programs regarding health risks
While congenital methemoglobinemia cannot be prevented, acquired forms can be minimized through safe
drinking water practices and informed dietary choices.
ACKNOWLEDGEMENT
The author expresses sincere gratitude to the Public Health and Drinking Water Department, Pakur, for providing
research facilities and data support.
Special thanks are extended to Dr. C. S. Azad, Assistant Professor of Chemistry, Deoghar College, for his
valuable guidance and suggestions. The author also acknowledges the continuous support of her husband, Kishor
Mandal.
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