Plant growth regulators (PGRs) play a pivotal role in increasing vegetable productivity, but they have many drawbacks that can include health and safe concerns of consumers. In this study, the plant growth regulators (PGRs) contents of 111 Brassica juncea (L.) Czern. samples collected from six main suburban areas of Hanoi, Vietnam, were determined by liquid chromatography—electrospray tandem mass spectrometry. Results showed the presence of PGRs residues in 83 analyzed samples (74.77%). Eight PGRs, including Indole-3-acetic acid (IAA), Indole-3-butyric acid (IBA), Indole-3-carboxylic acid (ICA), 3-Indolepropionic acid (IPA), Gibberellin A₃ (GA₃), Gibberellin A₄ (GA₄), Gibberellin A₇ (GA₇) and Trans-zeatin (tZ), were found in B. juncea with the average residues dropped in the range of 0.04 and 0.65 mg kg⁻¹. GA₄ was considered as the most popular PGR applying in vegetable production in the investigated areas. Notably, the concentrations of gibberellins were higher than the regulations in vegetables and fruits in Europe, USA and Japan. This might be the potential health risks to consumers and environmental pollution, which necessary to be controlled with consideration of residue regulations.

植物生长调节剂 (PGR) 在提高蔬菜生产力方面发挥着关键作用，但它们有许多缺点，包括消费者的健康和安全问题。在这项研究中，111 种芥菜(L.) Czern 的植物生长调节剂 (PGRs) 含量。从越南河内的六个主要郊区采集的样品采用液相色谱-电喷雾串联质谱法进行测定。结果显示 83 个分析样品 (74.77%) 中存在 PGRs 残留物。八种 PGR，包括 Indole-3-乙酸 (IAA)、Indole-3-butyric acid (IBA)、Indole-3-carboxy acid (ICA)、3-Indolepropionic acid (IPA)、赤霉素 A ₃ (GA ₃ )，赤霉素 A ₄ (GA ₄ )、赤霉素 A ₇(GA ₇ ) 和反式玉米素 (tZ) 在芥菜中发现，平均残留量下降在 0.04 和 0.65 mg kg ^-1的范围内。GA ₄被认为是调查地区蔬菜生产中应用最广泛的 PGR。值得注意的是，欧洲、美国和日本的蔬菜和水果中赤霉素的浓度高于规定。这可能是对消费者和环境污染的潜在健康风险，需要考虑残留法规加以控制。