In the past 25 years, we have conducted more than 20 laboratory and field studies related to hydrogen sulfide (H₂S) in animal production. From millions of first-hand and real-world H₂S data points, we found that sulfur (S) source, release mechanism, and ventilation are three critical factors affecting toxic H₂S concentrations. Source of S determines how much H₂S mass can be potentially produced. Sulfur in water for animal drinking and barn cleaning can be a more important S source than S from animal feed and can cause extremely high H₂S concentrations. Release of H₂S from liquid swine manure exhibits a dynamic mechanism of Bubble Release and Reservoir Effect. High H₂S concentrations induced by manure disturbance and sudden H₂S release depend on the amount of H₂S that has been trapped in manure gas bubbles. Release patterns of H₂S are complicated and irregular and are difficult to predict. Ventilation or air exchange dilutes the H₂S mass in a defined space. The importance of ventilation, especially during manure operations, cannot be over-emphasized. Insufficient ventilation has claimed many deaths and injuries of farm workers and animals.

在过去的 25 年中，我们进行了 20 多项与动物生产中硫化氢 (H ₂ S)相关的实验室和现场研究。从数百万个第一手和真实世界的 H ₂ S 数据点中，我们发现硫 (S) 来源、释放机制和通风是影响有毒 H ₂ S 浓度的三个关键因素。S 的来源决定了可能产生多少 H ₂ S 质量。用于动物饮用和清洁谷仓的水中的硫可能是比来自动物饲料的 S 更重要的 S 源，并且会导致极高的 H ₂ S 浓度。从液态猪粪中释放H ₂ S表现出气泡释放和水库效应的动态机制。高 H ₂由粪便扰动和 H ₂ S突然释放引起的 S 浓度取决于已被捕获在粪便气泡中的 H ₂ S的量。H ₂ S 的释放模式复杂且不规则，难以预测。通风或空气交换稀释了限定空间中的 H ₂ S 质量。通风的重要性，尤其是在粪便操作期间，怎么强调都不过分。通风不足已导致许多农场工人和动物死亡和受伤。